2190616506 has 48 divisors (see below), whose sum is σ = 5195266440. Its totient is φ = 662981760.

The previous prime is 2190616469. The next prime is 2190616591. The reversal of 2190616506 is 6056160912.

2190616506 is a `hidden beast` number, since 2 + 1 + 90 + 61 + 6 + 506 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1508623281 + 681993225 = 38841^2 + 26115^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62461 + ... + 91008.

Almost surely, 2^2190616506 is an apocalyptic number.

2190616506 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2190616506 is an abundant number, since it is smaller than the sum of its proper divisors (3004649934).

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

2190616506 is a wasteful number, since it uses less digits than its factorization.

2190616506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153551 (or 153548 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 2190616506 is about 46804.0223271462. The cubic root of 2190616506 is about 1298.7397068008.

The spelling of 2190616506 in words is "two billion, one hundred ninety million, six hundred sixteen thousand, five hundred six".