1659972052 has 12 divisors (see below), whose sum is σ = 2907162720. Its totient is φ = 829354136.

The previous prime is 1659972037. The next prime is 1659972053. The reversal of 1659972052 is 2502799561.

It is a junction number, because it is equal to n+sod(n) for n = 1659971993 and 1659972011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1659972053) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152038 + ... + 162589.

It is an arithmetic number, because the mean of its divisors is an integer number (242263560).

Almost surely, 2^1659972052 is an apocalyptic number.

It is an amenable number.

1659972052 is a deficient number, since it is larger than the sum of its proper divisors (1247190668).

1659972052 is a wasteful number, since it uses less digits than its factorization.

1659972052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315950 (or 315948 counting only the distinct ones).

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 1659972052 is about 40742.7545951424. The cubic root of 1659972052 is about 1184.0415025703.

The spelling of 1659972052 in words is "one billion, six hundred fifty-nine million, nine hundred seventy-two thousand, fifty-two".