189628499 has 8 divisors (see below), whose sum is σ = 191711520. Its totient is φ = 187551936.

The previous prime is 189628487. The next prime is 189628507. The reversal of 189628499 is 994826981.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-189628499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189628469) 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, 78047 + ... + 80439.

It is an arithmetic number, because the mean of its divisors is an integer number (23963940).

Almost surely, 2^189628499 is an apocalyptic number.

189628499 is a deficient number, since it is larger than the sum of its proper divisors (2083021).

189628499 is a wasteful number, since it uses less digits than its factorization.

189628499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3229.

The product of its digits is 2239488, while the sum is 56.

The square root of 189628499 is about 13770.5664008421. The cubic root of 189628499 is about 574.5147755266.

The spelling of 189628499 in words is "one hundred eighty-nine million, six hundred twenty-eight thousand, four hundred ninety-nine".