189907999019 has 2 divisors, whose sum is σ = 189907999020. Its totient is φ = 189907999018.

The previous prime is 189907999013. The next prime is 189907999079. The reversal of 189907999019 is 910999709981.

189907999019 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189907999019 - 2¹⁶ = 189907933483 is a prime.

It is a super-2 number, since 2×189907999019² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (189907999013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94953999509 + 94953999510.

It is an arithmetic number, because the mean of its divisors is an integer number (94953999510).

Almost surely, 2^189907999019 is an apocalyptic number.

189907999019 is a deficient number, since it is larger than the sum of its proper divisors (1).

189907999019 is an equidigital number, since it uses as much as digits as its factorization.

189907999019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29760696, while the sum is 71.

The spelling of 189907999019 in words is "one hundred eighty-nine billion, nine hundred seven million, nine hundred ninety-nine thousand, nineteen".