194909492 has 6 divisors (see below), whose sum is σ = 341091618. Its totient is φ = 97454744.

The previous prime is 194909447. The next prime is 194909503. The reversal of 194909492 is 294909491.

194909492 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 118940836 + 75968656 = 10906^2 + 8716^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24363683 + ... + 24363690.

It is an arithmetic number, because the mean of its divisors is an integer number (56848603).

Almost surely, 2^194909492 is an apocalyptic number.

It is an amenable number.

194909492 is a deficient number, since it is larger than the sum of its proper divisors (146182126).

194909492 is a wasteful number, since it uses less digits than its factorization.

194909492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48727377 (or 48727375 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 47.

The square root of 194909492 is about 13960.9989613924. The cubic root of 194909492 is about 579.7992686268.

Subtracting 194909492 from its reverse (294909491), we obtain a palindrome (99999999).

It can be divided in two parts, 19490 and 9492, that added together give a palindrome (28982).

The spelling of 194909492 in words is "one hundred ninety-four million, nine hundred nine thousand, four hundred ninety-two".