1161563300 has 36 divisors (see below), whose sum is σ = 2579220336. Its totient is φ = 453818400.

The previous prime is 1161563287. The next prime is 1161563321. The reversal of 1161563300 is 33651611.

It is a self number, because there is not a number n which added to its sum of digits gives 1161563300.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 130766 + ... + 139365.

Almost surely, 2^1161563300 is an apocalyptic number.

1161563300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1161563300 is an abundant number, since it is smaller than the sum of its proper divisors (1417657036).

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

1161563300 is a wasteful number, since it uses less digits than its factorization.

1161563300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270188 (or 270181 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 1161563300 is about 34081.7150390059. The cubic root of 1161563300 is about 1051.1893703166.

The spelling of 1161563300 in words is "one billion, one hundred sixty-one million, five hundred sixty-three thousand, three hundred".