38897623837 has 2 divisors, whose sum is σ = 38897623838. Its totient is φ = 38897623836.

The previous prime is 38897623769. The next prime is 38897623861. The reversal of 38897623837 is 73832679883.

38897623837 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31347056601 + 7550567236 = 177051^2 + 86894^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38897623837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38897623867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19448811918 + 19448811919.

It is an arithmetic number, because the mean of its divisors is an integer number (19448811919).

Almost surely, 2^38897623837 is an apocalyptic number.

It is an amenable number.

38897623837 is a deficient number, since it is larger than the sum of its proper divisors (1).

38897623837 is an equidigital number, since it uses as much as digits as its factorization.

38897623837 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73156608, while the sum is 64.

The spelling of 38897623837 in words is "thirty-eight billion, eight hundred ninety-seven million, six hundred twenty-three thousand, eight hundred thirty-seven".