189490763 has 8 divisors (see below), whose sum is σ = 236248320. Its totient is φ = 147655080.

The previous prime is 189490757. The next prime is 189490783. The reversal of 189490763 is 367094981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 189490763 - 2²⁰ = 188442187 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (189490703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1230383 + ... + 1230536.

It is an arithmetic number, because the mean of its divisors is an integer number (29531040).

Almost surely, 2^189490763 is an apocalyptic number.

189490763 is a deficient number, since it is larger than the sum of its proper divisors (46757557).

189490763 is a wasteful number, since it uses less digits than its factorization.

189490763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2460937.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 189490763 is about 13765.5643908995. The cubic root of 189490763 is about 574.3756428994.

The spelling of 189490763 in words is "one hundred eighty-nine million, four hundred ninety thousand, seven hundred sixty-three".