189393107 has 4 divisors (see below), whose sum is σ = 200533896. Its totient is φ = 178252320.

The previous prime is 189393097. The next prime is 189393143. The reversal of 189393107 is 701393981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 701393981 = 23887 ⋅29363.

It is a cyclic number.

It is not a de Polignac number, because 189393107 - 2⁸ = 189392851 is a prime.

It is a super-2 number, since 2×189393107² = 71739497958226898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189393187) 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, 5570369 + ... + 5570402.

It is an arithmetic number, because the mean of its divisors is an integer number (50133474).

Almost surely, 2^189393107 is an apocalyptic number.

189393107 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

189393107 is a deficient number, since it is larger than the sum of its proper divisors (11140789).

189393107 is a wasteful number, since it uses less digits than its factorization.

189393107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11140788.

The product of its (nonzero) digits is 40824, while the sum is 41.

The square root of 189393107 is about 13762.0168216726. The cubic root of 189393107 is about 574.2769558264.

The spelling of 189393107 in words is "one hundred eighty-nine million, three hundred ninety-three thousand, one hundred seven".