38429356639 has 16 divisors (see below), whose sum is σ = 40752614592. Its totient is φ = 36163024128.

The previous prime is 38429356631. The next prime is 38429356673. The reversal of 38429356639 is 93665392483.

It is a cyclic number.

It is not a de Polignac number, because 38429356639 - 2³ = 38429356631 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38429356631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 637737 + ... + 695389.

It is an arithmetic number, because the mean of its divisors is an integer number (2547038412).

Almost surely, 2^38429356639 is an apocalyptic number.

38429356639 is a deficient number, since it is larger than the sum of its proper divisors (2323257953).

38429356639 is a wasteful number, since it uses less digits than its factorization.

38429356639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58146.

The product of its digits is 25194240, while the sum is 58.

The spelling of 38429356639 in words is "thirty-eight billion, four hundred twenty-nine million, three hundred fifty-six thousand, six hundred thirty-nine".