2156605750 has 32 divisors (see below), whose sum is σ = 4347723744. Its totient is φ = 796284000.

The previous prime is 2156605747. The next prime is 2156605751. The reversal of 2156605750 is 575066512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156605751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328536 + ... + 335035.

It is an arithmetic number, because the mean of its divisors is an integer number (135866367).

Almost surely, 2^2156605750 is an apocalyptic number.

2156605750 is an abundant number, since it is smaller than the sum of its proper divisors (2191117994).

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

2156605750 is a wasteful number, since it uses less digits than its factorization.

2156605750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 663601 (or 663591 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 37.

The square root of 2156605750 is about 46439.2694817651. The cubic root of 2156605750 is about 1291.9833581200.

The spelling of 2156605750 in words is "two billion, one hundred fifty-six million, six hundred five thousand, seven hundred fifty".