813850738 has 16 divisors (see below), whose sum is σ = 1252087704. Its totient is φ = 396512640.

The previous prime is 813850729. The next prime is 813850771. The reversal of 813850738 is 837058318.

It can be written as a sum of positive squares in 4 ways, for example, as 788317929 + 25532809 = 28077^2 + 5053^2 .

It is a junction number, because it is equal to n+sod(n) for n = 813850694 and 813850703.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66256 + ... + 77572.

Almost surely, 2^813850738 is an apocalyptic number.

813850738 is a deficient number, since it is larger than the sum of its proper divisors (438236966).

813850738 is a wasteful number, since it uses less digits than its factorization.

813850738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12237.

The product of its (nonzero) digits is 161280, while the sum is 43.

The square root of 813850738 is about 28528.0693002523. The cubic root of 813850738 is about 933.6445946823.

The spelling of 813850738 in words is "eight hundred thirteen million, eight hundred fifty thousand, seven hundred thirty-eight".