194749031 has 12 divisors (see below), whose sum is σ = 206197200. Its totient is φ = 183908448.

The previous prime is 194749013. The next prime is 194749063. The reversal of 194749031 is 130947491.

It is a de Polignac number, because none of the positive numbers 2^k-194749031 is a prime.

It is a super-2 number, since 2×194749031² = 75854370150877922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194749081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 146990 + ... + 148308.

It is an arithmetic number, because the mean of its divisors is an integer number (17183100).

Almost surely, 2^194749031 is an apocalyptic number.

194749031 is a deficient number, since it is larger than the sum of its proper divisors (11448169).

194749031 is a wasteful number, since it uses less digits than its factorization.

194749031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766 (or 1747 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 194749031 is about 13955.2510188817. The cubic root of 194749031 is about 579.6401166158.

The spelling of 194749031 in words is "one hundred ninety-four million, seven hundred forty-nine thousand, thirty-one".