38128499 has 2 divisors, whose sum is σ = 38128500. Its totient is φ = 38128498.

The previous prime is 38128439. The next prime is 38128507. The reversal of 38128499 is 99482183.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38128499 - 2¹² = 38124403 is a prime.

It is not a weakly prime, because it can be changed into another prime (38128439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19064249 + 19064250.

It is an arithmetic number, because the mean of its divisors is an integer number (19064250).

Almost surely, 2^38128499 is an apocalyptic number.

38128499 is a deficient number, since it is larger than the sum of its proper divisors (1).

38128499 is an equidigital number, since it uses as much as digits as its factorization.

38128499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 44.

The square root of 38128499 is about 6174.8278518514. The cubic root of 38128499 is about 336.5760708862.

The spelling of 38128499 in words is "thirty-eight million, one hundred twenty-eight thousand, four hundred ninety-nine".