193738885 has 8 divisors (see below), whose sum is σ = 246162456. Its totient is φ = 145873920.

The previous prime is 193738873. The next prime is 193738891. The reversal of 193738885 is 588837391.

It can be written as a sum of positive squares in 4 ways, for example, as 4456321 + 189282564 = 2111^2 + 13758^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 193738885 - 2⁷ = 193738757 is a prime.

It is a super-2 number, since 2×193738885² = 75069511122086450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1139556 + ... + 1139725.

It is an arithmetic number, because the mean of its divisors is an integer number (30770307).

Almost surely, 2^193738885 is an apocalyptic number.

It is an amenable number.

193738885 is a deficient number, since it is larger than the sum of its proper divisors (52423571).

193738885 is a wasteful number, since it uses less digits than its factorization.

193738885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2279303.

The product of its digits is 1451520, while the sum is 52.

The square root of 193738885 is about 13919.0116387623. The cubic root of 193738885 is about 578.6361981909.

The spelling of 193738885 in words is "one hundred ninety-three million, seven hundred thirty-eight thousand, eight hundred eighty-five".