805081951 has 2 divisors, whose sum is σ = 805081952. Its totient is φ = 805081950.

The previous prime is 805081919. The next prime is 805081973. The reversal of 805081951 is 159180508.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 805081951 - 2⁵ = 805081919 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 805081951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (805081751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 402540975 + 402540976.

It is an arithmetic number, because the mean of its divisors is an integer number (402540976).

Almost surely, 2^805081951 is an apocalyptic number.

805081951 is a deficient number, since it is larger than the sum of its proper divisors (1).

805081951 is an equidigital number, since it uses as much as digits as its factorization.

805081951 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14400, while the sum is 37.

The square root of 805081951 is about 28373.9660780794. The cubic root of 805081951 is about 930.2793129511.

The spelling of 805081951 in words is "eight hundred five million, eighty-one thousand, nine hundred fifty-one".