194940590 has 32 divisors (see below), whose sum is σ = 379028160. Its totient is φ = 71760384.

The previous prime is 194940583. The next prime is 194940607. The reversal of 194940590 is 95049491.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44582 + ... + 48758.

It is an arithmetic number, because the mean of its divisors is an integer number (11844630).

Almost surely, 2^194940590 is an apocalyptic number.

194940590 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194940590 is a deficient number, since it is larger than the sum of its proper divisors (184087570).

194940590 is a wasteful number, since it uses less digits than its factorization.

194940590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4556.

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 194940590 is about 13962.1126624877. The cubic root of 194940590 is about 579.8301028337.

The spelling of 194940590 in words is "one hundred ninety-four million, nine hundred forty thousand, five hundred ninety".