38388240901988 has 24 divisors (see below), whose sum is σ = 71332656984792. Its totient is φ = 18013878738944.

The previous prime is 38388240901859. The next prime is 38388240902059. The reversal of 38388240901988 is 88910904288383.

It can be written as a sum of positive squares in 4 ways, for example, as 4231323052324 + 34156917849664 = 2057018^2 + 5844392^2 .

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, 799597745 + ... + 799645752.

It is an arithmetic number, because the mean of its divisors is an integer number (2972194041033).

Almost surely, 2^{38388240901988} is an apocalyptic number.

It is an amenable number.

38388240901988 is a deficient number, since it is larger than the sum of its proper divisors (32944416082804).

38388240901988 is a wasteful number, since it uses less digits than its factorization.

38388240901988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1599243871 (or 1599243869 counting only the distinct ones).

The product of its (nonzero) digits is 191102976, while the sum is 71.

The spelling of 38388240901988 in words is "thirty-eight trillion, three hundred eighty-eight billion, two hundred forty million, nine hundred one thousand, nine hundred eighty-eight".