38649022864 has 10 divisors (see below), whose sum is σ = 74882481830. Its totient is φ = 19324511424.

The previous prime is 38649022817. The next prime is 38649022897. The reversal of 38649022864 is 46822094683.

38649022864 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 38648414464 + 608400 = 196592^2 + 780^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1207781949 + ... + 1207781980.

It is an arithmetic number, because the mean of its divisors is an integer number (7488248183).

Almost surely, 2^38649022864 is an apocalyptic number.

It is an amenable number.

38649022864 is a deficient number, since it is larger than the sum of its proper divisors (36233458966).

38649022864 is a wasteful number, since it uses less digits than its factorization.

38649022864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2415563937 (or 2415563931 counting only the distinct ones).

The product of its (nonzero) digits is 3981312, while the sum is 52.

The spelling of 38649022864 in words is "thirty-eight billion, six hundred forty-nine million, twenty-two thousand, eight hundred sixty-four".