194007974394 has 128 divisors (see below), whose sum is σ = 432057846528. Its totient is φ = 57699532800.

The previous prime is 194007974359. The next prime is 194007974411. The reversal of 194007974394 is 493479700491.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 149121544 + ... + 149122844.

It is an arithmetic number, because the mean of its divisors is an integer number (3375451926).

Almost surely, 2^194007974394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194007974394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (216028923264).

194007974394 is an abundant number, since it is smaller than the sum of its proper divisors (238049872134).

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

194007974394 is a wasteful number, since it uses less digits than its factorization.

194007974394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1792.

The product of its (nonzero) digits is 6858432, while the sum is 57.

The spelling of 194007974394 in words is "one hundred ninety-four billion, seven million, nine hundred seventy-four thousand, three hundred ninety-four".