194191039 has 16 divisors (see below), whose sum is σ = 234062080. Its totient is φ = 157386240.

The previous prime is 194191013. The next prime is 194191043. The reversal of 194191039 is 930191491.

It is a cyclic number.

It is not a de Polignac number, because 194191039 - 2⁹ = 194190527 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 194190989 and 194191007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194191069) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90847 + ... + 92959.

It is an arithmetic number, because the mean of its divisors is an integer number (14628880).

Almost surely, 2^194191039 is an apocalyptic number.

194191039 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

194191039 is a deficient number, since it is larger than the sum of its proper divisors (39871041).

194191039 is a wasteful number, since it uses less digits than its factorization.

194191039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830.

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 194191039 is about 13935.2444901408. The cubic root of 194191039 is about 579.0859950046.

The spelling of 194191039 in words is "one hundred ninety-four million, one hundred ninety-one thousand, thirty-nine".