2156025468 has 12 divisors (see below), whose sum is σ = 5030726120. Its totient is φ = 718675152.

The previous prime is 2156025457. The next prime is 2156025491. The reversal of 2156025468 is 8645206512.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

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, 89834383 + ... + 89834406.

Almost surely, 2^2156025468 is an apocalyptic number.

It is an amenable number.

2156025468 is an abundant number, since it is smaller than the sum of its proper divisors (2874700652).

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

2156025468 is a wasteful number, since it uses less digits than its factorization.

2156025468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179668796 (or 179668794 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 39.

The square root of 2156025468 is about 46433.0213102701. The cubic root of 2156025468 is about 1291.8674689209.

The spelling of 2156025468 in words is "two billion, one hundred fifty-six million, twenty-five thousand, four hundred sixty-eight".