1138974969 has 32 divisors (see below), whose sum is σ = 1748851200. Its totient is φ = 652095360.

The previous prime is 1138974961. The next prime is 1138974979. The reversal of 1138974969 is 9694798311.

It is not a de Polignac number, because 1138974969 - 2³ = 1138974961 is a prime.

It is a super-2 number, since 2×1138974969² = 2594527960017101922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (1138974961) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 235237 + ... + 240029.

It is an arithmetic number, because the mean of its divisors is an integer number (54651600).

Almost surely, 2^1138974969 is an apocalyptic number.

1138974969 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

1138974969 is a deficient number, since it is larger than the sum of its proper divisors (609876231).

1138974969 is a wasteful number, since it uses less digits than its factorization.

1138974969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5205.

The product of its digits is 2939328, while the sum is 57.

The square root of 1138974969 is about 33748.7032195313. The cubic root of 1138974969 is about 1044.3307357394.

The spelling of 1138974969 in words is "one billion, one hundred thirty-eight million, nine hundred seventy-four thousand, nine hundred sixty-nine".