189995613 has 4 divisors (see below), whose sum is σ = 253327488. Its totient is φ = 126663740.

The previous prime is 189995609. The next prime is 189995651. The reversal of 189995613 is 316599981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 189995613 - 2² = 189995609 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189995653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31665933 + ... + 31665938.

It is an arithmetic number, because the mean of its divisors is an integer number (63331872).

Almost surely, 2^189995613 is an apocalyptic number.

It is an amenable number.

189995613 is a deficient number, since it is larger than the sum of its proper divisors (63331875).

189995613 is an equidigital number, since it uses as much as digits as its factorization.

189995613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63331874.

The product of its digits is 524880, while the sum is 51.

The square root of 189995613 is about 13783.8896179562. The cubic root of 189995613 is about 574.8852832268.

The spelling of 189995613 in words is "one hundred eighty-nine million, nine hundred ninety-five thousand, six hundred thirteen".