189161942 has 4 divisors (see below), whose sum is σ = 283742916. Its totient is φ = 94580970.

The previous prime is 189161939. The next prime is 189161957. The reversal of 189161942 is 249161981.

189161942 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×189161942² = 71564480602422728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 189161942.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47290484 + ... + 47290487.

It is an arithmetic number, because the mean of its divisors is an integer number (70935729).

Almost surely, 2^189161942 is an apocalyptic number.

189161942 is a deficient number, since it is larger than the sum of its proper divisors (94580974).

189161942 is an equidigital number, since it uses as much as digits as its factorization.

189161942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94580973.

The product of its digits is 31104, while the sum is 41.

The square root of 189161942 is about 13753.6155973620. The cubic root of 189161942 is about 574.0432148665.

The spelling of 189161942 in words is "one hundred eighty-nine million, one hundred sixty-one thousand, nine hundred forty-two".