38404632869 has 2 divisors, whose sum is σ = 38404632870. Its totient is φ = 38404632868.

The previous prime is 38404632803. The next prime is 38404632899. The reversal of 38404632869 is 96823640483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38000823844 + 403809025 = 194938^2 + 20095^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38404632869 is a prime.

It is a super-2 number, since 2×38404632869² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38404632869.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (38404632899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19202316434 + 19202316435.

It is an arithmetic number, because the mean of its divisors is an integer number (19202316435).

Almost surely, 2^38404632869 is an apocalyptic number.

It is an amenable number.

38404632869 is a deficient number, since it is larger than the sum of its proper divisors (1).

38404632869 is an equidigital number, since it uses as much as digits as its factorization.

38404632869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5971968, while the sum is 53.

The spelling of 38404632869 in words is "thirty-eight billion, four hundred four million, six hundred thirty-two thousand, eight hundred sixty-nine".