194815982 has 4 divisors (see below), whose sum is σ = 292223976. Its totient is φ = 97407990.

The previous prime is 194815981. The next prime is 194815991. The reversal of 194815982 is 289518491.

194815982 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 289518491 = 151 ⋅1917341.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194815981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48703994 + ... + 48703997.

It is an arithmetic number, because the mean of its divisors is an integer number (73055994).

Almost surely, 2^194815982 is an apocalyptic number.

194815982 is a deficient number, since it is larger than the sum of its proper divisors (97407994).

194815982 is an equidigital number, since it uses as much as digits as its factorization.

194815982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97407993.

The product of its digits is 207360, while the sum is 47.

The square root of 194815982 is about 13957.6495872335. The cubic root of 194815982 is about 579.7065320754.

The spelling of 194815982 in words is "one hundred ninety-four million, eight hundred fifteen thousand, nine hundred eighty-two".