873081091 has 2 divisors, whose sum is σ = 873081092. Its totient is φ = 873081090.

The previous prime is 873081059. The next prime is 873081109. The reversal of 873081091 is 190180378.

Together with next prime (873081109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 873081091 - 2⁵ = 873081059 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 873081091.

It is not a weakly prime, because it can be changed into another prime (873081691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436540545 + 436540546.

It is an arithmetic number, because the mean of its divisors is an integer number (436540546).

Almost surely, 2^873081091 is an apocalyptic number.

873081091 is a deficient number, since it is larger than the sum of its proper divisors (1).

873081091 is an equidigital number, since it uses as much as digits as its factorization.

873081091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 873081091 is about 29547.9456307879. The cubic root of 873081091 is about 955.7658909107.

The spelling of 873081091 in words is "eight hundred seventy-three million, eighty-one thousand, ninety-one".