2156586654 has 16 divisors (see below), whose sum is σ = 4413480192. Its totient is φ = 702144408.

The previous prime is 2156586617. The next prime is 2156586671. The reversal of 2156586654 is 4566856512.

It is a super-3 number, since 3×2156586654³ (a number of 29 digits) contains 333 as substring.

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, 4179174 + ... + 4179689.

It is an arithmetic number, because the mean of its divisors is an integer number (275842512).

Almost surely, 2^2156586654 is an apocalyptic number.

2156586654 is an abundant number, since it is smaller than the sum of its proper divisors (2256893538).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2156586654 is a wasteful number, since it uses less digits than its factorization.

2156586654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8358911.

The product of its digits is 1728000, while the sum is 48.

The square root of 2156586654 is about 46439.0638794539. The cubic root of 2156586654 is about 1291.9795447531.

The spelling of 2156586654 in words is "two billion, one hundred fifty-six million, five hundred eighty-six thousand, six hundred fifty-four".