38920086390 has 32 divisors (see below), whose sum is σ = 94333048416. Its totient is φ = 10275929600.

The previous prime is 38920086353. The next prime is 38920086391. The reversal of 38920086390 is 9368002983.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38920086391) 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, 6419427 + ... + 6425486.

It is an arithmetic number, because the mean of its divisors is an integer number (2947907763).

Almost surely, 2^38920086390 is an apocalyptic number.

38920086390 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38920086390 is an abundant number, since it is smaller than the sum of its proper divisors (55412962026).

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

38920086390 is a wasteful number, since it uses less digits than its factorization.

38920086390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12845024.

The product of its (nonzero) digits is 559872, while the sum is 48.

The spelling of 38920086390 in words is "thirty-eight billion, nine hundred twenty million, eighty-six thousand, three hundred ninety".