19225133387 has 2 divisors, whose sum is σ = 19225133388. Its totient is φ = 19225133386.

The previous prime is 19225133341. The next prime is 19225133399. The reversal of 19225133387 is 78333152291.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19225133387 is a prime.

It is not a weakly prime, because it can be changed into another prime (19225933387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9612566693 + 9612566694.

It is an arithmetic number, because the mean of its divisors is an integer number (9612566694).

Almost surely, 2^19225133387 is an apocalyptic number.

19225133387 is a deficient number, since it is larger than the sum of its proper divisors (1).

19225133387 is an equidigital number, since it uses as much as digits as its factorization.

19225133387 is an evil number, because the sum of its binary digits is even.

The product of its digits is 272160, while the sum is 44.

The spelling of 19225133387 in words is "nineteen billion, two hundred twenty-five million, one hundred thirty-three thousand, three hundred eighty-seven".