194791630 has 64 divisors (see below), whose sum is σ = 392610240. Its totient is φ = 68992000.

The previous prime is 194791609. The next prime is 194791633. The reversal of 194791630 is 36197491.

194791630 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194791633) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 988692 + ... + 988888.

It is an arithmetic number, because the mean of its divisors is an integer number (6134535).

Almost surely, 2^194791630 is an apocalyptic number.

194791630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

194791630 is an abundant number, since it is smaller than the sum of its proper divisors (197818610).

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

194791630 is a wasteful number, since it uses less digits than its factorization.

194791630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 194791630 is about 13956.7772067910. Note that the first 3 decimals coincide. The cubic root of 194791630 is about 579.6823766279.

The spelling of 194791630 in words is "one hundred ninety-four million, seven hundred ninety-one thousand, six hundred thirty".