38128429901 has 2 divisors, whose sum is σ = 38128429902. Its totient is φ = 38128429900.

The previous prime is 38128429897. The next prime is 38128429903. The reversal of 38128429901 is 10992482183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24531703876 + 13596726025 = 156626^2 + 116605^2 .

It is a cyclic number.

It is not a de Polignac number, because 38128429901 - 2² = 38128429897 is a prime.

Together with 38128429903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38128429903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19064214950 + 19064214951.

It is an arithmetic number, because the mean of its divisors is an integer number (19064214951).

Almost surely, 2^38128429901 is an apocalyptic number.

It is an amenable number.

38128429901 is a deficient number, since it is larger than the sum of its proper divisors (1).

38128429901 is an equidigital number, since it uses as much as digits as its factorization.

38128429901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 248832, while the sum is 47.

The spelling of 38128429901 in words is "thirty-eight billion, one hundred twenty-eight million, four hundred twenty-nine thousand, nine hundred one".