801778936 has 16 divisors (see below), whose sum is σ = 1718097840. Its totient is φ = 343619520.

The previous prime is 801778933. The next prime is 801778949. The reversal of 801778936 is 639877108.

It is a self number, because there is not a number n which added to its sum of digits gives 801778936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801778933) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 7158685 + ... + 7158796.

It is an arithmetic number, because the mean of its divisors is an integer number (107381115).

Almost surely, 2^801778936 is an apocalyptic number.

It is an amenable number.

801778936 is an abundant number, since it is smaller than the sum of its proper divisors (916318904).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

801778936 is a wasteful number, since it uses less digits than its factorization.

801778936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14317494 (or 14317490 counting only the distinct ones).

The product of its (nonzero) digits is 508032, while the sum is 49.

The square root of 801778936 is about 28315.7012274109. The cubic root of 801778936 is about 929.0053481122.

The spelling of 801778936 in words is "eight hundred one million, seven hundred seventy-eight thousand, nine hundred thirty-six".