2162172518 has 16 divisors (see below), whose sum is σ = 3540320784. Its totient is φ = 982188960.

The previous prime is 2162172491. The next prime is 2162172527. The reversal of 2162172518 is 8152712612.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5996 + ... + 66032.

It is an arithmetic number, because the mean of its divisors is an integer number (221270049).

Almost surely, 2^2162172518 is an apocalyptic number.

2162172518 is a deficient number, since it is larger than the sum of its proper divisors (1378148266).

2162172518 is a wasteful number, since it uses less digits than its factorization.

2162172518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61687.

The product of its digits is 13440, while the sum is 35.

The square root of 2162172518 is about 46499.1668527512. The cubic root of 2162172518 is about 1293.0940528891.

It can be divided in two parts, 21621725 and 18, that multiplied together give a triangular number (389191050 = T₂₇₈₉₉).

The spelling of 2162172518 in words is "two billion, one hundred sixty-two million, one hundred seventy-two thousand, five hundred eighteen".