189779630 has 8 divisors (see below), whose sum is σ = 341603352. Its totient is φ = 75911848.

The previous prime is 189779621. The next prime is 189779651. The reversal of 189779630 is 36977981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9488972 + ... + 9488991.

It is an arithmetic number, because the mean of its divisors is an integer number (42700419).

Almost surely, 2^189779630 is an apocalyptic number.

189779630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189779630 is a deficient number, since it is larger than the sum of its proper divisors (151823722).

189779630 is a wasteful number, since it uses less digits than its factorization.

189779630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18977970.

The product of its (nonzero) digits is 571536, while the sum is 50.

The square root of 189779630 is about 13776.0527728374. The cubic root of 189779630 is about 574.6673614804.

The spelling of 189779630 in words is "one hundred eighty-nine million, seven hundred seventy-nine thousand, six hundred thirty".