38618915650 has 48 divisors (see below), whose sum is σ = 82739275776. Its totient is φ = 13136497920.

The previous prime is 38618915551. The next prime is 38618915677. The reversal of 38618915650 is 5651981683.

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, 389959 + ... + 478858.

It is an arithmetic number, because the mean of its divisors is an integer number (1723734912).

Almost surely, 2^38618915650 is an apocalyptic number.

38618915650 is an abundant number, since it is smaller than the sum of its proper divisors (44120360126).

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

38618915650 is a wasteful number, since it uses less digits than its factorization.

38618915650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868963 (or 868958 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 52.

The spelling of 38618915650 in words is "thirty-eight billion, six hundred eighteen million, nine hundred fifteen thousand, six hundred fifty".