3638166774 has 24 divisors (see below), whose sum is σ = 7997955000. Its totient is φ = 1102474560.

The previous prime is 3638166757. The next prime is 3638166803. The reversal of 3638166774 is 4776618363.

3638166774 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

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, 2504899 + ... + 2506350.

It is an arithmetic number, because the mean of its divisors is an integer number (333248125).

Almost surely, 2^3638166774 is an apocalyptic number.

3638166774 is an abundant number, since it is smaller than the sum of its proper divisors (4359788226).

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

3638166774 is a wasteful number, since it uses less digits than its factorization.

3638166774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5011276 (or 5011265 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 51.

The square root of 3638166774 is about 60317.2178900851. The cubic root of 3638166774 is about 1538.0160506599.

The spelling of 3638166774 in words is "three billion, six hundred thirty-eight million, one hundred sixty-six thousand, seven hundred seventy-four".