813038690 has 32 divisors (see below), whose sum is σ = 1541989440. Its totient is φ = 307800000.

The previous prime is 813038689. The next prime is 813038713. The reversal of 813038690 is 96830318.

It is a super-3 number, since 3×813038690³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 360065 + ... + 362315.

It is an arithmetic number, because the mean of its divisors is an integer number (48187170).

Almost surely, 2^813038690 is an apocalyptic number.

813038690 is a deficient number, since it is larger than the sum of its proper divisors (728950750).

813038690 is a wasteful number, since it uses less digits than its factorization.

813038690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4178.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 813038690 is about 28513.8333094658. The cubic root of 813038690 is about 933.3339658442. Note that the first 3 decimals are identical.

The spelling of 813038690 in words is "eight hundred thirteen million, thirty-eight thousand, six hundred ninety".