19132891 has 2 divisors, whose sum is σ = 19132892. Its totient is φ = 19132890.

The previous prime is 19132889. The next prime is 19132903. The reversal of 19132891 is 19823191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19132891 - 2¹ = 19132889 is a prime.

Together with 19132889, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (19132831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9566445 + 9566446.

It is an arithmetic number, because the mean of its divisors is an integer number (9566446).

Almost surely, 2^19132891 is an apocalyptic number.

19132891 is a deficient number, since it is larger than the sum of its proper divisors (1).

19132891 is an equidigital number, since it uses as much as digits as its factorization.

19132891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3888, while the sum is 34.

The square root of 19132891 is about 4374.1160249815. The cubic root of 19132891 is about 267.4608368439.

The spelling of 19132891 in words is "nineteen million, one hundred thirty-two thousand, eight hundred ninety-one".