189898501 has 4 divisors (see below), whose sum is σ = 204506092. Its totient is φ = 175290912.

The previous prime is 189898487. The next prime is 189898507. The reversal of 189898501 is 105898981.

189898501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64480900 + 125417601 = 8030^2 + 11199^2 .

It is a cyclic number.

It is not a de Polignac number, because 189898501 - 2⁵ = 189898469 is a prime.

It is a super-2 number, since 2×189898501² = 72122881364094002, which contains 22 as substring.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189898507) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7303776 + ... + 7303801.

It is an arithmetic number, because the mean of its divisors is an integer number (51126523).

Almost surely, 2^189898501 is an apocalyptic number.

It is an amenable number.

189898501 is a deficient number, since it is larger than the sum of its proper divisors (14607591).

189898501 is a wasteful number, since it uses less digits than its factorization.

189898501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14607590.

The product of its (nonzero) digits is 207360, while the sum is 49.

The square root of 189898501 is about 13780.3665045600. The cubic root of 189898501 is about 574.7873199577.

The spelling of 189898501 in words is "one hundred eighty-nine million, eight hundred ninety-eight thousand, five hundred one".