3658639252 has 48 divisors (see below), whose sum is σ = 6588243648. Its totient is φ = 1777248000.

The previous prime is 3658639211. The next prime is 3658639267. The reversal of 3658639252 is 2529368563.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 3658639196 and 3658639205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9215518 + ... + 9215914.

It is an arithmetic number, because the mean of its divisors is an integer number (137255076).

Almost surely, 2^3658639252 is an apocalyptic number.

It is an amenable number.

3658639252 is a deficient number, since it is larger than the sum of its proper divisors (2929604396).

3658639252 is a wasteful number, since it uses less digits than its factorization.

3658639252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856 (or 854 counting only the distinct ones).

The product of its digits is 2332800, while the sum is 49.

The square root of 3658639252 is about 60486.6865682028. The cubic root of 3658639252 is about 1540.8955341159.

The spelling of 3658639252 in words is "three billion, six hundred fifty-eight million, six hundred thirty-nine thousand, two hundred fifty-two".