802415851 has 2 divisors, whose sum is σ = 802415852. Its totient is φ = 802415850.

The previous prime is 802415839. The next prime is 802415941. The reversal of 802415851 is 158514208.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-802415851 is a prime.

It is not a weakly prime, because it can be changed into another prime (802445851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401207925 + 401207926.

It is an arithmetic number, because the mean of its divisors is an integer number (401207926).

Almost surely, 2^802415851 is an apocalyptic number.

802415851 is a deficient number, since it is larger than the sum of its proper divisors (1).

802415851 is an equidigital number, since it uses as much as digits as its factorization.

802415851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12800, while the sum is 34.

The square root of 802415851 is about 28326.9456701565. The cubic root of 802415851 is about 929.2512765956.

The spelling of 802415851 in words is "eight hundred two million, four hundred fifteen thousand, eight hundred fifty-one".