1163243500 has 24 divisors (see below), whose sum is σ = 2540524896. Its totient is φ = 465297200.

The previous prime is 1163243491. The next prime is 1163243503. The reversal of 1163243500 is 53423611.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (1163243503) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1162744 + ... + 1163743.

It is an arithmetic number, because the mean of its divisors is an integer number (105855204).

Almost surely, 2^1163243500 is an apocalyptic number.

1163243500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1163243500 is an abundant number, since it is smaller than the sum of its proper divisors (1377281396).

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

1163243500 is a wasteful number, since it uses less digits than its factorization.

1163243500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2326506 (or 2326494 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 1163243500 is about 34106.3557126821. The cubic root of 1163243500 is about 1051.6959742062.

The spelling of 1163243500 in words is "one billion, one hundred sixty-three million, two hundred forty-three thousand, five hundred".