191439429914 has 16 divisors (see below), whose sum is σ = 289543294656. Its totient is φ = 94925968800.

The previous prime is 191439429913. The next prime is 191439429941. The reversal of 191439429914 is 419924934191.

It is a self number, because there is not a number n which added to its sum of digits gives 191439429914.

It is not an unprimeable number, because it can be changed into a prime (191439429913) 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, 154094 + ... + 637670.

It is an arithmetic number, because the mean of its divisors is an integer number (18096455916).

Almost surely, 2^191439429914 is an apocalyptic number.

191439429914 is a deficient number, since it is larger than the sum of its proper divisors (98103864742).

191439429914 is a wasteful number, since it uses less digits than its factorization.

191439429914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485221.

The product of its digits is 2519424, while the sum is 56.

The spelling of 191439429914 in words is "one hundred ninety-one billion, four hundred thirty-nine million, four hundred twenty-nine thousand, nine hundred fourteen".