1813199876 has 6 divisors (see below), whose sum is σ = 3173099790. Its totient is φ = 906599936.

The previous prime is 1813199831. The next prime is 1813199879. The reversal of 1813199876 is 6789913181.

It can be written as a sum of positive squares in only one way, i.e., 1590414400 + 222785476 = 39880^2 + 14926^2 .

It is not an unprimeable number, because it can be changed into a prime (1813199879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 226649981 + ... + 226649988.

It is an arithmetic number, because the mean of its divisors is an integer number (528849965).

Almost surely, 2^1813199876 is an apocalyptic number.

It is an amenable number.

1813199876 is a deficient number, since it is larger than the sum of its proper divisors (1359899914).

1813199876 is a wasteful number, since it uses less digits than its factorization.

1813199876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453299973 (or 453299971 counting only the distinct ones).

The product of its digits is 653184, while the sum is 53.

The square root of 1813199876 is about 42581.6847482577. The cubic root of 1813199876 is about 1219.4066531550.

The spelling of 1813199876 in words is "one billion, eight hundred thirteen million, one hundred ninety-nine thousand, eight hundred seventy-six".