194374857 has 8 divisors (see below), whose sum is σ = 259233184. Its totient is φ = 129549888.

The previous prime is 194374841. The next prime is 194374877. The reversal of 194374857 is 758473491.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 194374857 - 2⁴ = 194374841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194374877) 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, 13233 + ... + 23745.

It is an arithmetic number, because the mean of its divisors is an integer number (32404148).

Almost surely, 2^194374857 is an apocalyptic number.

It is an amenable number.

194374857 is a deficient number, since it is larger than the sum of its proper divisors (64858327).

194374857 is a wasteful number, since it uses less digits than its factorization.

194374857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16679.

The product of its digits is 846720, while the sum is 48.

The square root of 194374857 is about 13941.8383651511. The cubic root of 194374857 is about 579.2686550985.

The spelling of 194374857 in words is "one hundred ninety-four million, three hundred seventy-four thousand, eight hundred fifty-seven".