813780092 has 6 divisors (see below), whose sum is σ = 1424115168. Its totient is φ = 406890044.

The previous prime is 813780091. The next prime is 813780119. The reversal of 813780092 is 290087318.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (813780091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101722508 + ... + 101722515.

It is an arithmetic number, because the mean of its divisors is an integer number (237352528).

Almost surely, 2^813780092 is an apocalyptic number.

It is an amenable number.

813780092 is a deficient number, since it is larger than the sum of its proper divisors (610335076).

813780092 is a wasteful number, since it uses less digits than its factorization.

813780092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203445027 (or 203445025 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 813780092 is about 28526.8310893446. The cubic root of 813780092 is about 933.6175790141.

The spelling of 813780092 in words is "eight hundred thirteen million, seven hundred eighty thousand, ninety-two".