2157508834 has 16 divisors (see below), whose sum is σ = 3487675968. Its totient is φ = 995067792.

The previous prime is 2157508799. The next prime is 2157508841. The reversal of 2157508834 is 4388057512.

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 7 ways as a sum of consecutive naturals, for example, 8949 + ... + 66295.

It is an arithmetic number, because the mean of its divisors is an integer number (217979748).

Almost surely, 2^2157508834 is an apocalyptic number.

2157508834 is a deficient number, since it is larger than the sum of its proper divisors (1330167134).

2157508834 is a wasteful number, since it uses less digits than its factorization.

2157508834 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58809.

The product of its (nonzero) digits is 268800, while the sum is 43.

The square root of 2157508834 is about 46448.9917436321. The cubic root of 2157508834 is about 1292.1636733637.

The spelling of 2157508834 in words is "two billion, one hundred fifty-seven million, five hundred eight thousand, eight hundred thirty-four".