189935419 has 16 divisors (see below), whose sum is σ = 209505280. Its totient is φ = 171499680.

The previous prime is 189935401. The next prime is 189935423. The reversal of 189935419 is 914539981.

It is a cyclic number.

It is not a de Polignac number, because 189935419 - 2⁵ = 189935387 is a prime.

It is a super-2 number, since 2×189935419² = 72150926781411122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (189935719) 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, 37057 + ... + 41869.

It is an arithmetic number, because the mean of its divisors is an integer number (13094080).

Almost surely, 2^189935419 is an apocalyptic number.

189935419 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

189935419 is a deficient number, since it is larger than the sum of its proper divisors (19569861).

189935419 is a wasteful number, since it uses less digits than its factorization.

189935419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4930.

The product of its digits is 349920, while the sum is 49.

The square root of 189935419 is about 13781.7059539086. The cubic root of 189935419 is about 574.8245655094.

The spelling of 189935419 in words is "one hundred eighty-nine million, nine hundred thirty-five thousand, four hundred nineteen".