194196390 has 32 divisors (see below), whose sum is σ = 467773920. Its totient is φ = 51596544.

The previous prime is 194196371. The next prime is 194196391. The reversal of 194196390 is 93691491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194196391) 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, 3375 + ... + 19994.

It is an arithmetic number, because the mean of its divisors is an integer number (14617935).

Almost surely, 2^194196390 is an apocalyptic number.

194196390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194196390 is an abundant number, since it is smaller than the sum of its proper divisors (273577530).

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

194196390 is a wasteful number, since it uses less digits than its factorization.

194196390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23656.

The product of its (nonzero) digits is 52488, while the sum is 42.

The square root of 194196390 is about 13935.4364840144. The cubic root of 194196390 is about 579.0913139261.

The spelling of 194196390 in words is "one hundred ninety-four million, one hundred ninety-six thousand, three hundred ninety".