1163245988 has 12 divisors (see below), whose sum is σ = 2043031452. Its totient is φ = 579522720.

The previous prime is 1163245981. The next prime is 1163245991. The reversal of 1163245988 is 8895423611.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 56220004 + 1107025984 = 7498^2 + 33272^2 .

It is a super-2 number, since 2×1163245988² = 2706282457196192288, which contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1163245981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 523823 + ... + 526038.

It is an arithmetic number, because the mean of its divisors is an integer number (170252621).

Almost surely, 2^1163245988 is an apocalyptic number.

It is an amenable number.

1163245988 is a deficient number, since it is larger than the sum of its proper divisors (879785464).

1163245988 is a wasteful number, since it uses less digits than its factorization.

1163245988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1050142 (or 1050140 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 1163245988 is about 34106.3921868028. The cubic root of 1163245988 is about 1051.6967240113.

The spelling of 1163245988 in words is "one billion, one hundred sixty-three million, two hundred forty-five thousand, nine hundred eighty-eight".