189497449 has 12 divisors (see below), whose sum is σ = 195870640. Its totient is φ = 183319200.

The previous prime is 189497411. The next prime is 189497479. The reversal of 189497449 is 944794981.

It is not a de Polignac number, because 189497449 - 2²⁵ = 155943017 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 189497449.

It is not an unprimeable number, because it can be changed into a prime (189497479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 233254 + ... + 234064.

Almost surely, 2^189497449 is an apocalyptic number.

It is an amenable number.

189497449 is a deficient number, since it is larger than the sum of its proper divisors (6373191).

189497449 is an equidigital number, since it uses as much as digits as its factorization.

189497449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1032 (or 991 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 55.

The square root of 189497449 is about 13765.8072411319. The cubic root of 189497449 is about 574.3823982513.

The spelling of 189497449 in words is "one hundred eighty-nine million, four hundred ninety-seven thousand, four hundred forty-nine".