2157940952 has 16 divisors (see below), whose sum is σ = 4086201600. Its totient is φ = 1068287200.

The previous prime is 2157940943. The next prime is 2157940957. The reversal of 2157940952 is 2590497512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2157940957) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1334552 + ... + 1336167.

It is an arithmetic number, because the mean of its divisors is an integer number (255387600).

Almost surely, 2^2157940952 is an apocalyptic number.

It is an amenable number.

2157940952 is a deficient number, since it is larger than the sum of its proper divisors (1928260648).

2157940952 is a wasteful number, since it uses less digits than its factorization.

2157940952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2670826 (or 2670822 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 44.

The square root of 2157940952 is about 46453.6430433610. The cubic root of 2157940952 is about 1292.2499348736.

The spelling of 2157940952 in words is "two billion, one hundred fifty-seven million, nine hundred forty thousand, nine hundred fifty-two".