2157590190 has 192 divisors, whose sum is σ = 6385757184. Its totient is φ = 456855552.

The previous prime is 2157590189. The next prime is 2157590203. The reversal of 2157590190 is 910957512.

It is a super-2 number, since 2×2157590190² = 9310390855968472200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4430127 + ... + 4430613.

It is an arithmetic number, because the mean of its divisors is an integer number (33259152).

Almost surely, 2^2157590190 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2157590190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3192878592).

2157590190 is an abundant number, since it is smaller than the sum of its proper divisors (4228166994).

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

2157590190 is a wasteful number, since it uses less digits than its factorization.

2157590190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 39.

The square root of 2157590190 is about 46449.8674917378. The cubic root of 2157590190 is about 1292.1799149267.

The spelling of 2157590190 in words is "two billion, one hundred fifty-seven million, five hundred ninety thousand, one hundred ninety".