1138251523 has 2 divisors, whose sum is σ = 1138251524. Its totient is φ = 1138251522.

The previous prime is 1138251497. The next prime is 1138251529. The reversal of 1138251523 is 3251528311.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1138251523 - 2²⁵ = 1104697091 is a prime.

It is a super-2 number, since 2×1138251523² = 2591233059223639058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1138251529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569125761 + 569125762.

It is an arithmetic number, because the mean of its divisors is an integer number (569125762).

Almost surely, 2^1138251523 is an apocalyptic number.

1138251523 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138251523 is an equidigital number, since it uses as much as digits as its factorization.

1138251523 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7200, while the sum is 31.

The square root of 1138251523 is about 33737.9833866815. The cubic root of 1138251523 is about 1044.1095787249.

Adding to 1138251523 its reverse (3251528311), we get a palindrome (4389779834).

The spelling of 1138251523 in words is "one billion, one hundred thirty-eight million, two hundred fifty-one thousand, five hundred twenty-three".