2157037929 has 12 divisors (see below), whose sum is σ = 3116735856. Its totient is φ = 1437557112.

The previous prime is 2157037919. The next prime is 2157037933. The reversal of 2157037929 is 9297307512.

2157037929 is a `hidden beast` number, since 2 + 1 + 570 + 3 + 79 + 2 + 9 = 666.

It is not a de Polignac number, because 2157037929 - 2⁴ = 2157037913 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2157037919) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8587 + ... + 66240.

It is an arithmetic number, because the mean of its divisors is an integer number (259727988).

Almost surely, 2^2157037929 is an apocalyptic number.

It is an amenable number.

2157037929 is a deficient number, since it is larger than the sum of its proper divisors (959697927).

2157037929 is a wasteful number, since it uses less digits than its factorization.

2157037929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78036 (or 78033 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 2157037929 is about 46443.9224118721. The cubic root of 2157037929 is about 1292.0696558870.

The spelling of 2157037929 in words is "two billion, one hundred fifty-seven million, thirty-seven thousand, nine hundred twenty-nine".