1651968480 has 96 divisors (see below), whose sum is σ = 5210672544. Its totient is φ = 439934976.

The previous prime is 1651968463. The next prime is 1651968541. The reversal of 1651968480 is 848691561.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 447924 + ... + 451596.

It is an arithmetic number, because the mean of its divisors is an integer number (54277839).

Almost surely, 2^1651968480 is an apocalyptic number.

1651968480 is a gapful number since it is divisible by the number (10) 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 1651968480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2605336272).

1651968480 is an abundant number, since it is smaller than the sum of its proper divisors (3558704064).

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

1651968480 is a wasteful number, since it uses less digits than its factorization.

1651968480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628 (or 4620 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 48.

The square root of 1651968480 is about 40644.4151145025. The cubic root of 1651968480 is about 1182.1354799601.

The spelling of 1651968480 in words is "one billion, six hundred fifty-one million, nine hundred sixty-eight thousand, four hundred eighty".