1131738739 has 12 divisors (see below), whose sum is σ = 1209933664. Its totient is φ = 1058338944.

The previous prime is 1131738719. The next prime is 1131738761. The reversal of 1131738739 is 9378371311.

It is not a de Polignac number, because 1131738739 - 2²¹ = 1129641587 is a prime.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1131738695 and 1131738704.

It is not an unprimeable number, because it can be changed into a prime (1131738719) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 32902 + ... + 57844.

Almost surely, 2^1131738739 is an apocalyptic number.

1131738739 is a deficient number, since it is larger than the sum of its proper divisors (78194925).

1131738739 is a wasteful number, since it uses less digits than its factorization.

1131738739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25134 (or 25117 counting only the distinct ones).

The product of its digits is 95256, while the sum is 43.

The square root of 1131738739 is about 33641.3248698680. The cubic root of 1131738739 is about 1042.1143925975.

The spelling of 1131738739 in words is "one billion, one hundred thirty-one million, seven hundred thirty-eight thousand, seven hundred thirty-nine".