1600661612 has 96 divisors (see below), whose sum is σ = 3365107200. Its totient is φ = 658022400.

The previous prime is 1600661603. The next prime is 1600661617. The reversal of 1600661612 is 2161660061.

It is a super-2 number, since 2×1600661612² = 5124235192260877088, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (1600661617) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2496812 + ... + 2497452.

It is an arithmetic number, because the mean of its divisors is an integer number (35053200).

Almost surely, 2^1600661612 is an apocalyptic number.

It is an amenable number.

1600661612 is an abundant number, since it is smaller than the sum of its proper divisors (1764445588).

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

1600661612 is a wasteful number, since it uses less digits than its factorization.

1600661612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 807 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1600661612 is about 40008.2692952345. The cubic root of 1600661612 is about 1169.7682868379.

The spelling of 1600661612 in words is "one billion, six hundred million, six hundred sixty-one thousand, six hundred twelve".