5390731566 has 48 divisors (see below), whose sum is σ = 13412355840. Its totient is φ = 1547577360.

The previous prime is 5390731561. The next prime is 5390731573. The reversal of 5390731566 is 6651370935.

5390731566 is a `hidden beast` number, since 53 + 9 + 0 + 7 + 31 + 566 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5390731561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 712710 + ... + 720233.

It is an arithmetic number, because the mean of its divisors is an integer number (279424080).

Almost surely, 2^5390731566 is an apocalyptic number.

5390731566 is an abundant number, since it is smaller than the sum of its proper divisors (8021624274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5390731566 is a wasteful number, since it uses less digits than its factorization.

5390731566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432981 (or 1432978 counting only the distinct ones).

The product of its (nonzero) digits is 510300, while the sum is 45.

The square root of 5390731566 is about 73421.6014943831. The cubic root of 5390731566 is about 1753.4063249486.

The spelling of 5390731566 in words is "five billion, three hundred ninety million, seven hundred thirty-one thousand, five hundred sixty-six".