1138249499 has 2 divisors, whose sum is σ = 1138249500. Its totient is φ = 1138249498.

The previous prime is 1138249487. The next prime is 1138249513. The reversal of 1138249499 is 9949428311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1138249499 - 2²⁰ = 1137200923 is a prime.

It is a super-2 number, since 2×1138249499² = 2591223843947502002, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1138249199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569124749 + 569124750.

It is an arithmetic number, because the mean of its divisors is an integer number (569124750).

Almost surely, 2^1138249499 is an apocalyptic number.

1138249499 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138249499 is an equidigital number, since it uses as much as digits as its factorization.

1138249499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 559872, while the sum is 50.

The square root of 1138249499 is about 33737.9533908031. The cubic root of 1138249499 is about 1044.1089598578.

The spelling of 1138249499 in words is "one billion, one hundred thirty-eight million, two hundred forty-nine thousand, four hundred ninety-nine".