1161224464 has 20 divisors (see below), whose sum is σ = 2252964556. Its totient is φ = 579814272.

The previous prime is 1161224453. The next prime is 1161224507. The reversal of 1161224464 is 4644221611.

It can be written as a sum of positive squares in 2 ways, for example, as 497646864 + 663577600 = 22308^2 + 25760^2 .

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, 37779 + ... + 61234.

Almost surely, 2^1161224464 is an apocalyptic number.

It is an amenable number.

1161224464 is a deficient number, since it is larger than the sum of its proper divisors (1091740092).

1161224464 is an equidigital number, since it uses as much as digits as its factorization.

1161224464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99754 (or 99748 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 1161224464 is about 34076.7437411499. The cubic root of 1161224464 is about 1051.0871473209.

It can be divided in two parts, 1161 and 224464, that added together give a square (225625 = 475²).

The spelling of 1161224464 in words is "one billion, one hundred sixty-one million, two hundred twenty-four thousand, four hundred sixty-four".