1166520392 has 8 divisors (see below), whose sum is σ = 2187225750. Its totient is φ = 583260192.

The previous prime is 1166520391. The next prime is 1166520449. The reversal of 1166520392 is 2930256611.

It can be written as a sum of positive squares in only one way, i.e., 1070205796 + 96314596 = 32714^2 + 9814^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (1166520391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72907517 + ... + 72907532.

Almost surely, 2^1166520392 is an apocalyptic number.

It is an amenable number.

1166520392 is a deficient number, since it is larger than the sum of its proper divisors (1020705358).

1166520392 is a wasteful number, since it uses less digits than its factorization.

1166520392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145815055 (or 145815051 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 1166520392 is about 34154.3612442101. The cubic root of 1166520392 is about 1052.6826014184.

The spelling of 1166520392 in words is "one billion, one hundred sixty-six million, five hundred twenty thousand, three hundred ninety-two".