38351974387 has 2 divisors, whose sum is σ = 38351974388. Its totient is φ = 38351974386.

The previous prime is 38351974319. The next prime is 38351974393. The reversal of 38351974387 is 78347915383.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38351974387 - 2¹⁵ = 38351941619 is a prime.

It is a super-2 number, since 2×38351974387² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (38351971387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19175987193 + 19175987194.

It is an arithmetic number, because the mean of its divisors is an integer number (19175987194).

Almost surely, 2^38351974387 is an apocalyptic number.

38351974387 is a deficient number, since it is larger than the sum of its proper divisors (1).

38351974387 is an equidigital number, since it uses as much as digits as its factorization.

38351974387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15240960, while the sum is 58.

The spelling of 38351974387 in words is "thirty-eight billion, three hundred fifty-one million, nine hundred seventy-four thousand, three hundred eighty-seven".