189475642859 has 2 divisors, whose sum is σ = 189475642860. Its totient is φ = 189475642858.

The previous prime is 189475642787. The next prime is 189475642987. The reversal of 189475642859 is 958246574981.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 189475642859 - 2²⁸ = 189207207403 is a prime.

It is not a weakly prime, because it can be changed into another prime (189475642259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 94737821429 + 94737821430.

It is an arithmetic number, because the mean of its divisors is an integer number (94737821430).

Almost surely, 2^189475642859 is an apocalyptic number.

189475642859 is a deficient number, since it is larger than the sum of its proper divisors (1).

189475642859 is an equidigital number, since it uses as much as digits as its factorization.

189475642859 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174182400, while the sum is 68.

The spelling of 189475642859 in words is "one hundred eighty-nine billion, four hundred seventy-five million, six hundred forty-two thousand, eight hundred fifty-nine".