189934896513 has 8 divisors (see below), whose sum is σ = 253352810368. Its totient is φ = 126570123504.

The previous prime is 189934896509. The next prime is 189934896521. The reversal of 189934896513 is 315698439981.

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

It is not a de Polignac number, because 189934896513 - 2² = 189934896509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189934896523) 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, 13276870 + ... + 13291167.

It is an arithmetic number, because the mean of its divisors is an integer number (31669101296).

Almost surely, 2^189934896513 is an apocalyptic number.

It is an amenable number.

189934896513 is a deficient number, since it is larger than the sum of its proper divisors (63417913855).

189934896513 is a wasteful number, since it uses less digits than its factorization.

189934896513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26570423.

The product of its digits is 50388480, while the sum is 66.

The spelling of 189934896513 in words is "one hundred eighty-nine billion, nine hundred thirty-four million, eight hundred ninety-six thousand, five hundred thirteen".