189509070 has 16 divisors (see below), whose sum is σ = 454821840. Its totient is φ = 50535744.

The previous prime is 189509069. The next prime is 189509119. The reversal of 189509070 is 70905981.

It is a happy number.

It is a super-2 number, since 2×189509070² = 71827375224529800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3158455 + ... + 3158514.

It is an arithmetic number, because the mean of its divisors is an integer number (28426365).

Almost surely, 2^189509070 is an apocalyptic number.

189509070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189509070 is an abundant number, since it is smaller than the sum of its proper divisors (265312770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

189509070 is a wasteful number, since it uses less digits than its factorization.

189509070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6316979.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 189509070 is about 13766.2293312294. The cubic root of 189509070 is about 574.3941394145.

The spelling of 189509070 in words is "one hundred eighty-nine million, five hundred nine thousand, seventy".