2156245534 has 16 divisors (see below), whose sum is σ = 3297611088. Its totient is φ = 1057069312.

The previous prime is 2156245529. The next prime is 2156245577. The reversal of 2156245534 is 4355426512.

It is a junction number, because it is equal to n+sod(n) for n = 2156245493 and 2156245502.

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, 173889 + ... + 185875.

It is an arithmetic number, because the mean of its divisors is an integer number (206100693).

Almost surely, 2^2156245534 is an apocalyptic number.

2156245534 is a deficient number, since it is larger than the sum of its proper divisors (1141365554).

2156245534 is a wasteful number, since it uses less digits than its factorization.

2156245534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13739.

The product of its digits is 144000, while the sum is 37.

The square root of 2156245534 is about 46435.3909642204. The cubic root of 2156245534 is about 1291.9114211590.

The spelling of 2156245534 in words is "two billion, one hundred fifty-six million, two hundred forty-five thousand, five hundred thirty-four".