1163574987 has 16 divisors (see below), whose sum is σ = 1608563712. Its totient is φ = 747372960.

The previous prime is 1163574983. The next prime is 1163574989. The reversal of 1163574987 is 7894753611.

It is a happy number.

It is not a de Polignac number, because 1163574987 - 2² = 1163574983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1163574983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6448 + ... + 48669.

It is an arithmetic number, because the mean of its divisors is an integer number (100535232).

Almost surely, 2^1163574987 is an apocalyptic number.

1163574987 is a deficient number, since it is larger than the sum of its proper divisors (444988725).

1163574987 is a wasteful number, since it uses less digits than its factorization.

1163574987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55378.

The product of its digits is 1270080, while the sum is 51.

The square root of 1163574987 is about 34111.2149739642. The cubic root of 1163574987 is about 1051.7958645654.

The spelling of 1163574987 in words is "one billion, one hundred sixty-three million, five hundred seventy-four thousand, nine hundred eighty-seven".