193682889 has 9 divisors (see below), whose sum is σ = 279824493. Its totient is φ = 129094092.

The previous prime is 193682843. The next prime is 193682891. The reversal of 193682889 is 988286391.

It is a happy number.

The square root of 193682889 is 13917.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 193682889 - 2¹⁹ = 193158601 is a prime.

It is a super-2 number, since 2×193682889² = 75026122982772642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (193682089) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 39432 + ... + 44070.

Almost surely, 2^193682889 is an apocalyptic number.

193682889 is the 13917-th square number.

193682889 is the 6959-th centered octagonal number.

It is an amenable number.

193682889 is a deficient number, since it is larger than the sum of its proper divisors (86141604).

193682889 is an frugal number, since it uses more digits than its factorization.

193682889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9284 (or 4642 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 54.

The cubic root of 193682889 is about 578.5804454274.

The spelling of 193682889 in words is "one hundred ninety-three million, six hundred eighty-two thousand, eight hundred eighty-nine".