194772885 has 16 divisors (see below), whose sum is σ = 311990400. Its totient is φ = 103760960.

The previous prime is 194772881. The next prime is 194772887. The reversal of 194772885 is 588277491.

It is not a de Polignac number, because 194772885 - 2² = 194772881 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194772881) 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, 7216 + ... + 21014.

It is an arithmetic number, because the mean of its divisors is an integer number (19499400).

Almost surely, 2^194772885 is an apocalyptic number.

194772885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

194772885 is a deficient number, since it is larger than the sum of its proper divisors (117217515).

194772885 is a wasteful number, since it uses less digits than its factorization.

194772885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14748.

The product of its digits is 1128960, while the sum is 51.

The square root of 194772885 is about 13956.1056530825. The cubic root of 194772885 is about 579.6637815532.

The spelling of 194772885 in words is "one hundred ninety-four million, seven hundred seventy-two thousand, eight hundred eighty-five".