1131989376 has 96 divisors (see below), whose sum is σ = 3497818680. Its totient is φ = 323420160.

The previous prime is 1131989371. The next prime is 1131989381. The reversal of 1131989376 is 6739891311.

It is an interprime number because it is at equal distance from previous prime (1131989371) and next prime (1131989381).

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1131989371) 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, 11265 + ... + 48896.

Almost surely, 2^1131989376 is an apocalyptic number.

1131989376 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1131989376 is an abundant number, since it is smaller than the sum of its proper divisors (2365829304).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1131989376 is an equidigital number, since it uses as much as digits as its factorization.

1131989376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60192 (or 60173 counting only the distinct ones).

The product of its digits is 244944, while the sum is 48.

The square root of 1131989376 is about 33645.0497993390. The cubic root of 1131989376 is about 1042.1913164602.

The spelling of 1131989376 in words is "one billion, one hundred thirty-one million, nine hundred eighty-nine thousand, three hundred seventy-six".