2190557172 has 12 divisors (see below), whose sum is σ = 5111300096. Its totient is φ = 730185720.

The previous prime is 2190557147. The next prime is 2190557197. The reversal of 2190557172 is 2717550912.

It is a happy number.

2190557172 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2190557147) and next prime (2190557197).

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

It is a super-3 number, since 3×2190557172³ (a number of 29 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2190557172.

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, 91273204 + ... + 91273227.

Almost surely, 2^2190557172 is an apocalyptic number.

It is an amenable number.

2190557172 is an abundant number, since it is smaller than the sum of its proper divisors (2920742924).

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

2190557172 is a wasteful number, since it uses less digits than its factorization.

2190557172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182546438 (or 182546436 counting only the distinct ones).

The product of its (nonzero) digits is 44100, while the sum is 39.

The square root of 2190557172 is about 46803.3884670758. The cubic root of 2190557172 is about 1298.7279810123.

The spelling of 2190557172 in words is "two billion, one hundred ninety million, five hundred fifty-seven thousand, one hundred seventy-two".