5642431537 has 2 divisors, whose sum is σ = 5642431538. Its totient is φ = 5642431536.

The previous prime is 5642431519. The next prime is 5642431541. The reversal of 5642431537 is 7351342465.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5628600576 + 13830961 = 75024^2 + 3719^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5642431537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 5642431537.

It is not a weakly prime, because it can be changed into another prime (5642731537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821215768 + 2821215769.

It is an arithmetic number, because the mean of its divisors is an integer number (2821215769).

Almost surely, 2^5642431537 is an apocalyptic number.

It is an amenable number.

5642431537 is a deficient number, since it is larger than the sum of its proper divisors (1).

5642431537 is an equidigital number, since it uses as much as digits as its factorization.

5642431537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 40.

The square root of 5642431537 is about 75116.1203537563. The cubic root of 5642431537 is about 1780.2818575883.

The spelling of 5642431537 in words is "five billion, six hundred forty-two million, four hundred thirty-one thousand, five hundred thirty-seven".