189698290 has 16 divisors (see below), whose sum is σ = 342299160. Its totient is φ = 75692160.

The previous prime is 189698287. The next prime is 189698329. The reversal of 189698290 is 92896981.

189698290 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 186076881 + 3621409 = 13641^2 + 1903^2 .

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, 19101 + ... + 27280.

Almost surely, 2^189698290 is an apocalyptic number.

189698290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189698290 is a deficient number, since it is larger than the sum of its proper divisors (152600870).

189698290 is a wasteful number, since it uses less digits than its factorization.

189698290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46797.

The product of its (nonzero) digits is 559872, while the sum is 52.

The square root of 189698290 is about 13773.1002319739. The cubic root of 189698290 is about 574.5852484828.

The spelling of 189698290 in words is "one hundred eighty-nine million, six hundred ninety-eight thousand, two hundred ninety".