194090454 has 24 divisors (see below), whose sum is σ = 421068960. Its totient is φ = 64613808.

The previous prime is 194090447. The next prime is 194090459. The reversal of 194090454 is 454090491.

It is a happy number.

It is a super-2 number, since 2×194090454² = 75342208667852232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194090459) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8419 + ... + 21425.

It is an arithmetic number, because the mean of its divisors is an integer number (17544540).

Almost surely, 2^194090454 is an apocalyptic number.

194090454 is an abundant number, since it is smaller than the sum of its proper divisors (226978506).

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

194090454 is a wasteful number, since it uses less digits than its factorization.

194090454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13844 (or 13841 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 36.

The square root of 194090454 is about 13931.6350081389. The cubic root of 194090454 is about 578.9859948110.

The spelling of 194090454 in words is "one hundred ninety-four million, ninety thousand, four hundred fifty-four".