194021292 has 18 divisors (see below), whose sum is σ = 452828964. Its totient is φ = 64657680.

The previous prime is 194021279. The next prime is 194021299. The reversal of 194021292 is 292120491.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (194021299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46242 + ... + 50262.

Almost surely, 2^194021292 is an apocalyptic number.

194021292 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

194021292 is an abundant number, since it is smaller than the sum of its proper divisors (258807672).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194021292 is an frugal number, since it uses more digits than its factorization.

194021292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8049 (or 4026 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 194021292 is about 13929.1525944689. The cubic root of 194021292 is about 578.9172148755.

It can be divided in two parts, 1940 and 21292, that added together give a palindrome (23232).

The spelling of 194021292 in words is "one hundred ninety-four million, twenty-one thousand, two hundred ninety-two".