2156417548 has 12 divisors (see below), whose sum is σ = 3774672720. Its totient is φ = 1077939632.

The previous prime is 2156417537. The next prime is 2156417587. The reversal of 2156417548 is 8457146512.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48688 + ... + 81751.

It is an arithmetic number, because the mean of its divisors is an integer number (314556060).

Almost surely, 2^2156417548 is an apocalyptic number.

It is an amenable number.

2156417548 is a deficient number, since it is larger than the sum of its proper divisors (1618255172).

2156417548 is a wasteful number, since it uses less digits than its factorization.

2156417548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134576 (or 134574 counting only the distinct ones).

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

The square root of 2156417548 is about 46437.2431136905. The cubic root of 2156417548 is about 1291.9457742261.

The spelling of 2156417548 in words is "two billion, one hundred fifty-six million, four hundred seventeen thousand, five hundred forty-eight".