193991034 has 16 divisors (see below), whose sum is σ = 401361120. Its totient is φ = 62433840.

The previous prime is 193991033. The next prime is 193991051. The reversal of 193991034 is 430199391.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 193990983 and 193991001.

It is not an unprimeable number, because it can be changed into a prime (193991033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557272 + ... + 557619.

It is an arithmetic number, because the mean of its divisors is an integer number (25085070).

Almost surely, 2^193991034 is an apocalyptic number.

193991034 is an abundant number, since it is smaller than the sum of its proper divisors (207370086).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

193991034 is a wasteful number, since it uses less digits than its factorization.

193991034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114925.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 193991034 is about 13928.0664128227. The cubic root of 193991034 is about 578.8871188869.

The spelling of 193991034 in words is "one hundred ninety-three million, nine hundred ninety-one thousand, thirty-four".