801956803 has 2 divisors, whose sum is σ = 801956804. Its totient is φ = 801956802.

The previous prime is 801956789. The next prime is 801956809. The reversal of 801956803 is 308659108.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-801956803 is a prime.

It is not a weakly prime, because it can be changed into another prime (801956809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400978401 + 400978402.

It is an arithmetic number, because the mean of its divisors is an integer number (400978402).

Almost surely, 2^801956803 is an apocalyptic number.

801956803 is a deficient number, since it is larger than the sum of its proper divisors (1).

801956803 is an equidigital number, since it uses as much as digits as its factorization.

801956803 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 801956803 is about 28318.8418371938. The cubic root of 801956803 is about 929.0740400211.

The spelling of 801956803 in words is "eight hundred one million, nine hundred fifty-six thousand, eight hundred three".