2156673792 has 144 divisors (see below), whose sum is σ = 7064718080. Its totient is φ = 568774656.

The previous prime is 2156673773. The next prime is 2156673811. The reversal of 2156673792 is 2973766512.

It is an interprime number because it is at equal distance from previous prime (2156673773) and next prime (2156673811).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54459 + ... + 85317.

Almost surely, 2^2156673792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156673792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3532359040).

2156673792 is an abundant number, since it is smaller than the sum of its proper divisors (4908044288).

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

2156673792 is a wasteful number, since it uses less digits than its factorization.

2156673792 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30898 (or 30884 counting only the distinct ones).

The product of its digits is 952560, while the sum is 48.

The square root of 2156673792 is about 46440.0020671834. The cubic root of 2156673792 is about 1291.9969455528.

The spelling of 2156673792 in words is "two billion, one hundred fifty-six million, six hundred seventy-three thousand, seven hundred ninety-two".