1809628368 has 40 divisors (see below), whose sum is σ = 4678914816. Its totient is φ = 602688000.

The previous prime is 1809628363. The next prime is 1809628417. The reversal of 1809628368 is 8638269081.

It is a self number, because there is not a number n which added to its sum of digits gives 1809628368.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1809628361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41953 + ... + 73343.

Almost surely, 2^1809628368 is an apocalyptic number.

It is an amenable number.

1809628368 is an abundant number, since it is smaller than the sum of its proper divisors (2869286448).

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

1809628368 is a wasteful number, since it uses less digits than its factorization.

1809628368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32603 (or 32597 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 1809628368 is about 42539.7269384748. The cubic root of 1809628368 is about 1218.6054943356.

It can be divided in two parts, 18096 and 28368, that added together give a palindrome (46464).

The spelling of 1809628368 in words is "one billion, eight hundred nine million, six hundred twenty-eight thousand, three hundred sixty-eight".