195429091 has 16 divisors (see below), whose sum is σ = 239581440. Its totient is φ = 156863520.

The previous prime is 195429071. The next prime is 195429097. The reversal of 195429091 is 190924591.

It is not a de Polignac number, because 195429091 - 2⁷ = 195428963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195429097) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26421 + ... + 32998.

It is an arithmetic number, because the mean of its divisors is an integer number (14973840).

Almost surely, 2^195429091 is an apocalyptic number.

195429091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

195429091 is a deficient number, since it is larger than the sum of its proper divisors (44152349).

195429091 is a wasteful number, since it uses less digits than its factorization.

195429091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59466.

The product of its (nonzero) digits is 29160, while the sum is 40.

The square root of 195429091 is about 13979.5955234763. The cubic root of 195429091 is about 580.3140303001.

The spelling of 195429091 in words is "one hundred ninety-five million, four hundred twenty-nine thousand, ninety-one".