194249868135 has 32 divisors (see below), whose sum is σ = 321552504000. Its totient is φ = 100016480256.

The previous prime is 194249868133. The next prime is 194249868157. The reversal of 194249868135 is 531868942491.

It is not a de Polignac number, because 194249868135 - 2¹ = 194249868133 is a prime.

It is a super-2 number, since 2×194249868135² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194249868133) 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, 5187861 + ... + 5225169.

It is an arithmetic number, because the mean of its divisors is an integer number (10048515750).

Almost surely, 2^194249868135 is an apocalyptic number.

194249868135 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

194249868135 is a deficient number, since it is larger than the sum of its proper divisors (127302635865).

194249868135 is a wasteful number, since it uses less digits than its factorization.

194249868135 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49315.

The product of its digits is 14929920, while the sum is 60.

The spelling of 194249868135 in words is "one hundred ninety-four billion, two hundred forty-nine million, eight hundred sixty-eight thousand, one hundred thirty-five".