189961079 has 8 divisors (see below), whose sum is σ = 236834688. Its totient is φ = 148021560.

The previous prime is 189961033. The next prime is 189961081. The reversal of 189961079 is 970169981.

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 189961079 - 2¹⁶ = 189895543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189961099) 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, 1233437 + ... + 1233590.

It is an arithmetic number, because the mean of its divisors is an integer number (29604336).

Almost surely, 2^189961079 is an apocalyptic number.

189961079 is a deficient number, since it is larger than the sum of its proper divisors (46873609).

189961079 is a wasteful number, since it uses less digits than its factorization.

189961079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2467045.

The product of its (nonzero) digits is 244944, while the sum is 50.

The square root of 189961079 is about 13782.6368667247. The cubic root of 189961079 is about 574.8504503325.

The spelling of 189961079 in words is "one hundred eighty-nine million, nine hundred sixty-one thousand, seventy-nine".