189267290 has 16 divisors (see below), whose sum is σ = 360721512. Its totient is φ = 71253504.

The previous prime is 189267259. The next prime is 189267301. The reversal of 189267290 is 92762981.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 167987521 + 21279769 = 12961^2 + 4613^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 556499 + ... + 556838.

Almost surely, 2^189267290 is an apocalyptic number.

189267290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189267290 is a deficient number, since it is larger than the sum of its proper divisors (171454222).

189267290 is a wasteful number, since it uses less digits than its factorization.

189267290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1113361.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 189267290 is about 13757.4448935840. Note that the first 3 decimals coincide. The cubic root of 189267290 is about 574.1497604027.

The spelling of 189267290 in words is "one hundred eighty-nine million, two hundred sixty-seven thousand, two hundred ninety".