194372490 has 32 divisors (see below), whose sum is σ = 502379136. Its totient is φ = 47845440.

The previous prime is 194372483. The next prime is 194372537. The reversal of 194372490 is 94273491.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248806 + ... + 249585.

It is an arithmetic number, because the mean of its divisors is an integer number (15699348).

Almost surely, 2^194372490 is an apocalyptic number.

194372490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194372490 is an abundant number, since it is smaller than the sum of its proper divisors (308006646).

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

194372490 is a wasteful number, since it uses less digits than its factorization.

194372490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498414.

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 194372490 is about 13941.7534765179. The cubic root of 194372490 is about 579.2663037408.

The spelling of 194372490 in words is "one hundred ninety-four million, three hundred seventy-two thousand, four hundred ninety".