472578191 has 2 divisors, whose sum is σ = 472578192. Its totient is φ = 472578190.

The previous prime is 472578187. The next prime is 472578199. The reversal of 472578191 is 191875274.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 472578191 - 2² = 472578187 is a prime.

It is equal to p_24984818 and since 472578191 and 24984818 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (472578199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 236289095 + 236289096.

It is an arithmetic number, because the mean of its divisors is an integer number (236289096).

Almost surely, 2^472578191 is an apocalyptic number.

472578191 is a deficient number, since it is larger than the sum of its proper divisors (1).

472578191 is an equidigital number, since it uses as much as digits as its factorization.

472578191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 141120, while the sum is 44.

The square root of 472578191 is about 21738.8636087538. The cubic root of 472578191 is about 778.9170765383.

The spelling of 472578191 in words is "four hundred seventy-two million, five hundred seventy-eight thousand, one hundred ninety-one".