1164400544 has 12 divisors (see below), whose sum is σ = 2292413634. Its totient is φ = 582200256.

The previous prime is 1164400543. The next prime is 1164400561. The reversal of 1164400544 is 4450044611.

It can be written as a sum of positive squares in only one way, i.e., 1037612944 + 126787600 = 32212^2 + 11260^2 .

It is not an unprimeable number, because it can be changed into a prime (1164400543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18193727 + ... + 18193790.

Almost surely, 2^1164400544 is an apocalyptic number.

It is an amenable number.

1164400544 is a deficient number, since it is larger than the sum of its proper divisors (1128013090).

1164400544 is an equidigital number, since it uses as much as digits as its factorization.

1164400544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36387527 (or 36387519 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 1164400544 is about 34123.3137898417. The cubic root of 1164400544 is about 1052.0445556459.

The spelling of 1164400544 in words is "one billion, one hundred sixty-four million, four hundred thousand, five hundred forty-four".