19542070927 has 2 divisors, whose sum is σ = 19542070928. Its totient is φ = 19542070926.

The previous prime is 19542070913. The next prime is 19542070937. The reversal of 19542070927 is 72907024591.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19542070927 is a prime.

It is a super-2 number, since 2×19542070927² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19542070937) 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, 9771035463 + 9771035464.

It is an arithmetic number, because the mean of its divisors is an integer number (9771035464).

Almost surely, 2^19542070927 is an apocalyptic number.

19542070927 is a deficient number, since it is larger than the sum of its proper divisors (1).

19542070927 is an equidigital number, since it uses as much as digits as its factorization.

19542070927 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 19542070927 in words is "nineteen billion, five hundred forty-two million, seventy thousand, nine hundred twenty-seven".