2190009604 has 12 divisors (see below), whose sum is σ = 3833020828. Its totient is φ = 1094860800.

The previous prime is 2190009571. The next prime is 2190009659. The reversal of 2190009604 is 4069000912.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 432723204 + 1757286400 = 20802^2 + 41920^2 .

It is a super-2 number, since 2×2190009604² = 9592284131224473632, which contains 22 as substring.

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, 2884 + ... + 66244.

Almost surely, 2^2190009604 is an apocalyptic number.

It is an amenable number.

2190009604 is a deficient number, since it is larger than the sum of its proper divisors (1643011224).

2190009604 is a wasteful number, since it uses less digits than its factorization.

2190009604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72006 (or 72004 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 2190009604 is about 46797.5384395376. The cubic root of 2190009604 is about 1298.6197587520.

The spelling of 2190009604 in words is "two billion, one hundred ninety million, nine thousand, six hundred four".