189769605 has 16 divisors (see below), whose sum is σ = 303838080. Its totient is φ = 101141568.

The previous prime is 189769583. The next prime is 189769609. The reversal of 189769605 is 506967981.

It is not a de Polignac number, because 189769605 - 2⁷ = 189769477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189769609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24819 + ... + 31551.

It is an arithmetic number, because the mean of its divisors is an integer number (18989880).

Almost surely, 2^189769605 is an apocalyptic number.

189769605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

189769605 is a deficient number, since it is larger than the sum of its proper divisors (114068475).

189769605 is a wasteful number, since it uses less digits than its factorization.

189769605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8620.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 189769605 is about 13775.6889119928. The cubic root of 189769605 is about 574.6572424777.

The spelling of 189769605 in words is "one hundred eighty-nine million, seven hundred sixty-nine thousand, six hundred five".