189577453 has 4 divisors (see below), whose sum is σ = 204160348. Its totient is φ = 174994560.

The previous prime is 189577441. The next prime is 189577457. The reversal of 189577453 is 354775981.

It is a happy number.

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 124500964 + 65076489 = 11158^2 + 8067^2 .

It is a de Polignac number, because none of the positive numbers 2^k-189577453 is a prime.

It is a super-2 number, since 2×189577453² = 71879221371934418, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 189577397 and 189577406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189577457) 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, 7291428 + ... + 7291453.

It is an arithmetic number, because the mean of its divisors is an integer number (51040087).

Almost surely, 2^189577453 is an apocalyptic number.

189577453 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

189577453 is a deficient number, since it is larger than the sum of its proper divisors (14582895).

189577453 is a wasteful number, since it uses less digits than its factorization.

189577453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14582894.

The product of its digits is 1058400, while the sum is 49.

The square root of 189577453 is about 13768.7128301813. The cubic root of 189577453 is about 574.4632197860.

The spelling of 189577453 in words is "one hundred eighty-nine million, five hundred seventy-seven thousand, four hundred fifty-three".