19542593131 has 2 divisors, whose sum is σ = 19542593132. Its totient is φ = 19542593130.

The previous prime is 19542593053. The next prime is 19542593137. The reversal of 19542593131 is 13139524591.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19542593131 is a prime.

It is a super-2 number, since 2×19542593131² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19542593137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9771296565 + 9771296566.

It is an arithmetic number, because the mean of its divisors is an integer number (9771296566).

Almost surely, 2^19542593131 is an apocalyptic number.

19542593131 is a deficient number, since it is larger than the sum of its proper divisors (1).

19542593131 is an equidigital number, since it uses as much as digits as its factorization.

19542593131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 145800, while the sum is 43.

The spelling of 19542593131 in words is "nineteen billion, five hundred forty-two million, five hundred ninety-three thousand, one hundred thirty-one".