194942386 has 8 divisors (see below), whose sum is σ = 292828140. Its totient is φ = 97333008.

The previous prime is 194942311. The next prime is 194942389. The reversal of 194942386 is 683249491.

It can be written as a sum of positive squares in 2 ways, for example, as 181845225 + 13097161 = 13485^2 + 3619^2 .

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

It is a pancake number, because a pancake can be divided into 194942386 parts by 19745 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (194942389) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67321 + ... + 70156.

Almost surely, 2^194942386 is an apocalyptic number.

194942386 is a deficient number, since it is larger than the sum of its proper divisors (97885754).

194942386 is a wasteful number, since it uses less digits than its factorization.

194942386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138188.

The product of its digits is 373248, while the sum is 46.

The square root of 194942386 is about 13962.1769792536. The cubic root of 194942386 is about 579.8318834987.

The spelling of 194942386 in words is "one hundred ninety-four million, nine hundred forty-two thousand, three hundred eighty-six".