5426431618 has 32 divisors (see below), whose sum is σ = 8491747824. Its totient is φ = 2598469632.

The previous prime is 5426431609. The next prime is 5426431651. The reversal of 5426431618 is 8161346245.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3935931169 + 1490500449 = 62737^2 + 38607^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1383396 + ... + 1387312.

Almost surely, 2^5426431618 is an apocalyptic number.

5426431618 is a deficient number, since it is larger than the sum of its proper divisors (3065316206).

5426431618 is a wasteful number, since it uses less digits than its factorization.

5426431618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4246.

The product of its digits is 138240, while the sum is 40.

The square root of 5426431618 is about 73664.3171284442. The cubic root of 5426431618 is about 1757.2684489434.

The spelling of 5426431618 in words is "five billion, four hundred twenty-six million, four hundred thirty-one thousand, six hundred eighteen".