2190634506 has 24 divisors (see below), whose sum is σ = 4874656644. Its totient is φ = 710475840.

The previous prime is 2190634489. The next prime is 2190634513. The reversal of 2190634506 is 6054360912.

It is a happy number.

2190634506 is a `hidden beast` number, since 2 + 1 + 90 + 63 + 4 + 506 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 2188836225 + 1798281 = 46785^2 + 1341^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1643955 + ... + 1645286.

Almost surely, 2^2190634506 is an apocalyptic number.

2190634506 is an abundant number, since it is smaller than the sum of its proper divisors (2684022138).

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

2190634506 is a wasteful number, since it uses less digits than its factorization.

2190634506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3289286 (or 3289283 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 36.

The square root of 2190634506 is about 46804.2146179166. The cubic root of 2190634506 is about 1298.7432639806.

The spelling of 2190634506 in words is "two billion, one hundred ninety million, six hundred thirty-four thousand, five hundred six".