189520520407 has 2 divisors, whose sum is σ = 189520520408. Its totient is φ = 189520520406.

The previous prime is 189520520401. The next prime is 189520520507. The reversal of 189520520407 is 704025025981.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189520520407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (189520520401) 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, 94760260203 + 94760260204.

It is an arithmetic number, because the mean of its divisors is an integer number (94760260204).

Almost surely, 2^189520520407 is an apocalyptic number.

189520520407 is a deficient number, since it is larger than the sum of its proper divisors (1).

189520520407 is an equidigital number, since it uses as much as digits as its factorization.

189520520407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 201600, while the sum is 43.

The spelling of 189520520407 in words is "one hundred eighty-nine billion, five hundred twenty million, five hundred twenty thousand, four hundred seven".