1131604464 has 20 divisors (see below), whose sum is σ = 2923311656. Its totient is φ = 377201472.

The previous prime is 1131604459. The next prime is 1131604471. The reversal of 1131604464 is 4644061311.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11787499 + ... + 11787594.

Almost surely, 2^1131604464 is an apocalyptic number.

It is an amenable number.

1131604464 is an abundant number, since it is smaller than the sum of its proper divisors (1791707192).

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

1131604464 is a wasteful number, since it uses less digits than its factorization.

1131604464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23575104 (or 23575098 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 1131604464 is about 33639.3291252962. The cubic root of 1131604464 is about 1042.0731771239.

Adding to 1131604464 its reverse (4644061311), we get a palindrome (5775665775).

The spelling of 1131604464 in words is "one billion, one hundred thirty-one million, six hundred four thousand, four hundred sixty-four".