1138534299 has 80 divisors (see below), whose sum is σ = 1991385088. Its totient is φ = 634894848.

The previous prime is 1138534273. The next prime is 1138534307. The reversal of 1138534299 is 9924358311.

It is a happy number.

It is not a de Polignac number, because 1138534299 - 2²⁵ = 1104979867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1138534219) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 6984792 + ... + 6984954.

Almost surely, 2^1138534299 is an apocalyptic number.

1138534299 is a deficient number, since it is larger than the sum of its proper divisors (852850789).

1138534299 is a wasteful number, since it uses less digits than its factorization.

1138534299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 406 (or 397 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 1138534299 is about 33742.1738926229. The cubic root of 1138534299 is about 1044.1960343333.

The spelling of 1138534299 in words is "one billion, one hundred thirty-eight million, five hundred thirty-four thousand, two hundred ninety-nine".