189463290 has 32 divisors (see below), whose sum is σ = 455798016. Its totient is φ = 50402880.

The previous prime is 189463279. The next prime is 189463297. The reversal of 189463290 is 92364981.

It is not an unprimeable number, because it can be changed into a prime (189463297) 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, 5604 + ... + 20256.

It is an arithmetic number, because the mean of its divisors is an integer number (14243688).

Almost surely, 2^189463290 is an apocalyptic number.

189463290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

189463290 is an abundant number, since it is smaller than the sum of its proper divisors (266334726).

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

189463290 is a wasteful number, since it uses less digits than its factorization.

189463290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15094.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 189463290 is about 13764.5664661115. The cubic root of 189463290 is about 574.3478832618.

The spelling of 189463290 in words is "one hundred eighty-nine million, four hundred sixty-three thousand, two hundred ninety".