194312490 has 16 divisors (see below), whose sum is σ = 466350048. Its totient is φ = 51816656.

The previous prime is 194312477. The next prime is 194312491. The reversal of 194312490 is 94213491.

It is not an unprimeable number, because it can be changed into a prime (194312491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3238512 + ... + 3238571.

It is an arithmetic number, because the mean of its divisors is an integer number (29146878).

Almost surely, 2^194312490 is an apocalyptic number.

194312490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194312490 is an abundant number, since it is smaller than the sum of its proper divisors (272037558).

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

194312490 is a wasteful number, since it uses less digits than its factorization.

194312490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6477093.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 194312490 is about 13939.6015007603. The cubic root of 194312490 is about 579.2066938734.

The spelling of 194312490 in words is "one hundred ninety-four million, three hundred twelve thousand, four hundred ninety".