15945074219 has 2 divisors, whose sum is σ = 15945074220. Its totient is φ = 15945074218.

The previous prime is 15945074179. The next prime is 15945074239. The reversal of 15945074219 is 91247054951.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-15945074219 is a prime.

It is a super-2 number, since 2×15945074219² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (15945074239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7972537109 + 7972537110.

It is an arithmetic number, because the mean of its divisors is an integer number (7972537110).

Almost surely, 2^15945074219 is an apocalyptic number.

15945074219 is a deficient number, since it is larger than the sum of its proper divisors (1).

15945074219 is an equidigital number, since it uses as much as digits as its factorization.

15945074219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 453600, while the sum is 47.

The spelling of 15945074219 in words is "fifteen billion, nine hundred forty-five million, seventy-four thousand, two hundred nineteen".