802691945 has 32 divisors (see below), whose sum is σ = 1067523840. Its totient is φ = 574560000.

The previous prime is 802691909. The next prime is 802691951. The reversal of 802691945 is 549196208.

It is not a de Polignac number, because 802691945 - 2¹² = 802687849 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 802691896 and 802691905.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1271780 + ... + 1272410.

It is an arithmetic number, because the mean of its divisors is an integer number (33360120).

Almost surely, 2^802691945 is an apocalyptic number.

It is an amenable number.

802691945 is a deficient number, since it is larger than the sum of its proper divisors (264831895).

802691945 is a wasteful number, since it uses less digits than its factorization.

802691945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977.

The product of its (nonzero) digits is 155520, while the sum is 44.

The square root of 802691945 is about 28331.8185967650. The cubic root of 802691945 is about 929.3578428196.

The spelling of 802691945 in words is "eight hundred two million, six hundred ninety-one thousand, nine hundred forty-five".