189806693959 has 8 divisors (see below), whose sum is σ = 193953574080. Its totient is φ = 185664332256.

The previous prime is 189806693903. The next prime is 189806694043. The reversal of 189806693959 is 959396608981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189806693959 - 2⁷ = 189806693831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189806693891 and 189806693900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189806693059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1044604 + ... + 1212769.

It is an arithmetic number, because the mean of its divisors is an integer number (24244196760).

Almost surely, 2^189806693959 is an apocalyptic number.

189806693959 is a deficient number, since it is larger than the sum of its proper divisors (4146880121).

189806693959 is a wasteful number, since it uses less digits than its factorization.

189806693959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2259209.

The product of its (nonzero) digits is 226748160, while the sum is 73.

The spelling of 189806693959 in words is "one hundred eighty-nine billion, eight hundred six million, six hundred ninety-three thousand, nine hundred fifty-nine".