189029029079 has 4 divisors (see below), whose sum is σ = 206213486280. Its totient is φ = 171844571880.

The previous prime is 189029029037. The next prime is 189029029087. The reversal of 189029029079 is 970920920981.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189029029079 is a prime.

It is a super-3 number, since 3×189029029079³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189029029019) 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, 8592228584 + ... + 8592228605.

It is an arithmetic number, because the mean of its divisors is an integer number (51553371570).

Almost surely, 2^189029029079 is an apocalyptic number.

189029029079 is a deficient number, since it is larger than the sum of its proper divisors (17184457201).

189029029079 is a wasteful number, since it uses less digits than its factorization.

189029029079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17184457200.

The product of its (nonzero) digits is 1469664, while the sum is 56.

It can be divided in two parts, 18902902 and 9079, that added together give a palindrome (18911981).

The spelling of 189029029079 in words is "one hundred eighty-nine billion, twenty-nine million, twenty-nine thousand, seventy-nine".