194252137 has 8 divisors (see below), whose sum is σ = 199392480. Its totient is φ = 189131040.

The previous prime is 194252119. The next prime is 194252147. The reversal of 194252137 is 731252491.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 194252137 - 2²⁷ = 60034409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194252117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16914 + ... + 25972.

It is an arithmetic number, because the mean of its divisors is an integer number (24924060).

Almost surely, 2^194252137 is an apocalyptic number.

It is an amenable number.

194252137 is a deficient number, since it is larger than the sum of its proper divisors (5140343).

194252137 is an equidigital number, since it uses as much as digits as its factorization.

194252137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9623.

The product of its digits is 15120, while the sum is 34.

The square root of 194252137 is about 13937.4365290035. The cubic root of 194252137 is about 579.1467209206.

The spelling of 194252137 in words is "one hundred ninety-four million, two hundred fifty-two thousand, one hundred thirty-seven".