38388785401 has 2 divisors, whose sum is σ = 38388785402. Its totient is φ = 38388785400.

The previous prime is 38388785389. The next prime is 38388785419. The reversal of 38388785401 is 10458788383.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19460529001 + 18928256400 = 139501^2 + 137580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38388785401 is a prime.

It is not a weakly prime, because it can be changed into another prime (38388785431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19194392700 + 19194392701.

It is an arithmetic number, because the mean of its divisors is an integer number (19194392701).

Almost surely, 2^38388785401 is an apocalyptic number.

It is an amenable number.

38388785401 is a deficient number, since it is larger than the sum of its proper divisors (1).

38388785401 is an equidigital number, since it uses as much as digits as its factorization.

38388785401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5160960, while the sum is 55.

The spelling of 38388785401 in words is "thirty-eight billion, three hundred eighty-eight million, seven hundred eighty-five thousand, four hundred one".