189513390 has 32 divisors (see below), whose sum is σ = 496181376. Its totient is φ = 45942560.

The previous prime is 189513383. The next prime is 189513419. The reversal of 189513390 is 93315981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 286812 + ... + 287471.

It is an arithmetic number, because the mean of its divisors is an integer number (15505668).

Almost surely, 2^189513390 is an apocalyptic number.

189513390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189513390 is an abundant number, since it is smaller than the sum of its proper divisors (306667986).

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

189513390 is a wasteful number, since it uses less digits than its factorization.

189513390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574304.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 189513390 is about 13766.3862360461. The cubic root of 189513390 is about 574.3985039616.

The spelling of 189513390 in words is "one hundred eighty-nine million, five hundred thirteen thousand, three hundred ninety".