1813707740 has 24 divisors (see below), whose sum is σ = 4101770400. Its totient is φ = 669676608.

The previous prime is 1813707737. The next prime is 1813707751. The reversal of 1813707740 is 477073181.

It is a super-2 number, since 2×1813707740² = 6579071532271815200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1813707694 and 1813707703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3487640 + ... + 3488159.

It is an arithmetic number, because the mean of its divisors is an integer number (170907100).

Almost surely, 2^1813707740 is an apocalyptic number.

1813707740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1813707740 is an abundant number, since it is smaller than the sum of its proper divisors (2288062660).

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

1813707740 is a wasteful number, since it uses less digits than its factorization.

1813707740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6975821 (or 6975819 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 38.

The square root of 1813707740 is about 42587.6477396909. The cubic root of 1813707740 is about 1219.5204914835.

The spelling of 1813707740 in words is "one billion, eight hundred thirteen million, seven hundred seven thousand, seven hundred forty".