1131369664 has 28 divisors (see below), whose sum is σ = 2276691408. Its totient is φ = 557715200.

The previous prime is 1131369661. The next prime is 1131369671. The reversal of 1131369664 is 4669631311.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1131369661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119947 + ... + 129034.

Almost surely, 2^1131369664 is an apocalyptic number.

It is an amenable number.

1131369664 is an abundant number, since it is smaller than the sum of its proper divisors (1145321744).

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

1131369664 is an equidigital number, since it uses as much as digits as its factorization.

1131369664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249064 (or 249054 counting only the distinct ones).

The product of its digits is 69984, while the sum is 40.

The square root of 1131369664 is about 33635.8389816576. The cubic root of 1131369664 is about 1042.0010978433.

The spelling of 1131369664 in words is "one billion, one hundred thirty-one million, three hundred sixty-nine thousand, six hundred sixty-four".