194643730 has 32 divisors (see below), whose sum is σ = 364497408. Its totient is φ = 74755200.

The previous prime is 194643703. The next prime is 194643749. The reversal of 194643730 is 37346491.

It is a self number, because there is not a number n which added to its sum of digits gives 194643730.

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, 38214 + ... + 43006.

It is an arithmetic number, because the mean of its divisors is an integer number (11390544).

Almost surely, 2^194643730 is an apocalyptic number.

194643730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194643730 is a deficient number, since it is larger than the sum of its proper divisors (169853678).

194643730 is a wasteful number, since it uses less digits than its factorization.

194643730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4962.

The product of its (nonzero) digits is 54432, while the sum is 37.

The square root of 194643730 is about 13951.4776995127. The cubic root of 194643730 is about 579.5356271133.

The spelling of 194643730 in words is "one hundred ninety-four million, six hundred forty-three thousand, seven hundred thirty".