1659951468 has 288 divisors, whose sum is σ = 5353979904. Its totient is φ = 438939648.

The previous prime is 1659951457. The next prime is 1659951479. The reversal of 1659951468 is 8641599561.

1659951468 is a `hidden beast` number, since 1 + 6 + 599 + 5 + 1 + 46 + 8 = 666.

1659951468 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1659951457) and next prime (1659951479).

It is a super-2 number, since 2×1659951468² = 5510877752230710048, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13070421 + ... + 13070547.

It is an arithmetic number, because the mean of its divisors is an integer number (18590208).

Almost surely, 2^1659951468 is an apocalyptic number.

1659951468 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1659951468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2676989952).

1659951468 is an abundant number, since it is smaller than the sum of its proper divisors (3694028436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1659951468 is a wasteful number, since it uses less digits than its factorization.

1659951468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283 (or 269 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 54.

The square root of 1659951468 is about 40742.5019850279. The cubic root of 1659951468 is about 1184.0366084295.

The spelling of 1659951468 in words is "one billion, six hundred fifty-nine million, nine hundred fifty-one thousand, four hundred sixty-eight".