38915037890 has 16 divisors (see below), whose sum is σ = 70347703608. Its totient is φ = 15499207296.

The previous prime is 38915037871. The next prime is 38915037919. The reversal of 38915037890 is 9873051983.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18066854569 + 20848183321 = 134413^2 + 144389^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8348537 + ... + 8353196.

Almost surely, 2^38915037890 is an apocalyptic number.

38915037890 is a deficient number, since it is larger than the sum of its proper divisors (31432665718).

38915037890 is a wasteful number, since it uses less digits than its factorization.

38915037890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16701973.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 38915037890 in words is "thirty-eight billion, nine hundred fifteen million, thirty-seven thousand, eight hundred ninety".