38513953642 has 16 divisors (see below), whose sum is σ = 59346225792. Its totient is φ = 18732122640.

The previous prime is 38513953633. The next prime is 38513953649. The reversal of 38513953642 is 24635931583.

It is not an unprimeable number, because it can be changed into a prime (38513953649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 268467 + ... + 386137.

It is an arithmetic number, because the mean of its divisors is an integer number (3709139112).

Almost surely, 2^38513953642 is an apocalyptic number.

38513953642 is a deficient number, since it is larger than the sum of its proper divisors (20832272150).

38513953642 is a wasteful number, since it uses less digits than its factorization.

38513953642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122133.

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

The spelling of 38513953642 in words is "thirty-eight billion, five hundred thirteen million, nine hundred fifty-three thousand, six hundred forty-two".