1165487572 has 12 divisors (see below), whose sum is σ = 2039918580. Its totient is φ = 582653696.

The previous prime is 1165487567. The next prime is 1165487573. The reversal of 1165487572 is 2757845611.

It can be written as a sum of positive squares in 2 ways, for example, as 316697616 + 848789956 = 17796^2 + 29134^2 .

It is a super-2 number, since 2×1165487572² = 2716722560972910368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1165487573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12708 + ... + 49924.

It is an arithmetic number, because the mean of its divisors is an integer number (169993215).

Almost surely, 2^1165487572 is an apocalyptic number.

It is an amenable number.

1165487572 is a deficient number, since it is larger than the sum of its proper divisors (874431008).

1165487572 is a wasteful number, since it uses less digits than its factorization.

1165487572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45050 (or 45048 counting only the distinct ones).

The product of its digits is 470400, while the sum is 46.

The square root of 1165487572 is about 34139.2380114144. The cubic root of 1165487572 is about 1052.3718331190.

The spelling of 1165487572 in words is "one billion, one hundred sixty-five million, four hundred eighty-seven thousand, five hundred seventy-two".