1659313620 has 96 divisors (see below), whose sum is σ = 5169507840. Its totient is φ = 441866880.

The previous prime is 1659313609. The next prime is 1659313631. The reversal of 1659313620 is 263139561.

1659313620 is a `hidden beast` number, since 1 + 6 + 593 + 1 + 3 + 62 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (1659313609) and next prime (1659313631).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 490254 + ... + 493626.

It is an arithmetic number, because the mean of its divisors is an integer number (53849040).

Almost surely, 2^1659313620 is an apocalyptic number.

1659313620 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 1659313620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2584753920).

1659313620 is an abundant number, since it is smaller than the sum of its proper divisors (3510194220).

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

1659313620 is a wasteful number, since it uses less digits than its factorization.

1659313620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4302 (or 4294 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 1659313620 is about 40734.6734367664. The cubic root of 1659313620 is about 1183.8849308749.

The spelling of 1659313620 in words is "one billion, six hundred fifty-nine million, three hundred thirteen thousand, six hundred twenty".