1659620352 has 176 divisors, whose sum is σ = 4931468640. Its totient is φ = 492699648.

The previous prime is 1659620299. The next prime is 1659620363. The reversal of 1659620352 is 2530269561.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 1659620352.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1157428 + ... + 1158860.

Almost surely, 2^1659620352 is an apocalyptic number.

1659620352 is a gapful number since it is divisible by the number (12) 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 1659620352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2465734320).

1659620352 is an abundant number, since it is smaller than the sum of its proper divisors (3271848288).

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

1659620352 is a wasteful number, since it uses less digits than its factorization.

1659620352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1498 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 39.

The square root of 1659620352 is about 40738.4382616712. The cubic root of 1659620352 is about 1183.9578752970.

The spelling of 1659620352 in words is "one billion, six hundred fifty-nine million, six hundred twenty thousand, three hundred fifty-two".