1163813572 has 6 divisors (see below), whose sum is σ = 2036673758. Its totient is φ = 581906784.

The previous prime is 1163813569. The next prime is 1163813579. The reversal of 1163813572 is 2753183611.

It can be written as a sum of positive squares in only one way, i.e., 602407936 + 561405636 = 24544^2 + 23694^2 .

It is not an unprimeable number, because it can be changed into a prime (1163813579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145476693 + ... + 145476700.

Almost surely, 2^1163813572 is an apocalyptic number.

It is an amenable number.

1163813572 is a deficient number, since it is larger than the sum of its proper divisors (872860186).

1163813572 is a wasteful number, since it uses less digits than its factorization.

1163813572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290953397 (or 290953395 counting only the distinct ones).

The product of its digits is 30240, while the sum is 37.

The square root of 1163813572 is about 34114.7119583326. The cubic root of 1163813572 is about 1051.8677480766.

The spelling of 1163813572 in words is "one billion, one hundred sixty-three million, eight hundred thirteen thousand, five hundred seventy-two".