1813347872 has 24 divisors (see below), whose sum is σ = 4080033216. Its totient is φ = 777148992.

The previous prime is 1813347863. The next prime is 1813347889. The reversal of 1813347872 is 2787433181.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4047428 + ... + 4047875.

It is an arithmetic number, because the mean of its divisors is an integer number (170001384).

Almost surely, 2^1813347872 is an apocalyptic number.

It is an amenable number.

1813347872 is an abundant number, since it is smaller than the sum of its proper divisors (2266685344).

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

1813347872 is an equidigital number, since it uses as much as digits as its factorization.

1813347872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8095320 (or 8095312 counting only the distinct ones).

The product of its digits is 225792, while the sum is 44.

The square root of 1813347872 is about 42583.4225021897. The cubic root of 1813347872 is about 1219.4398288314.

The spelling of 1813347872 in words is "one billion, eight hundred thirteen million, three hundred forty-seven thousand, eight hundred seventy-two".