1138968963 has 24 divisors (see below), whose sum is σ = 1806807600. Its totient is φ = 685642560.

The previous prime is 1138968959. The next prime is 1138968983. The reversal of 1138968963 is 3698698311.

It is not a de Polignac number, because 1138968963 - 2² = 1138968959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1138968983) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23856 + ... + 53357.

It is an arithmetic number, because the mean of its divisors is an integer number (75283650).

Almost surely, 2^1138968963 is an apocalyptic number.

1138968963 is a deficient number, since it is larger than the sum of its proper divisors (667838637).

1138968963 is a wasteful number, since it uses less digits than its factorization.

1138968963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77379 (or 77376 counting only the distinct ones).

The product of its digits is 1679616, while the sum is 54.

The square root of 1138968963 is about 33748.6142382172. The cubic root of 1138968963 is about 1044.3289000943.

The spelling of 1138968963 in words is "one billion, one hundred thirty-eight million, nine hundred sixty-eight thousand, nine hundred sixty-three".