1816579960 has 32 divisors (see below), whose sum is σ = 4401714240. Its totient is φ = 670737024.

The previous prime is 1816579927. The next prime is 1816579993. The reversal of 1816579960 is 699756181.

It is an interprime number because it is at equal distance from previous prime (1816579927) and next prime (1816579993).

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a junction number, because it is equal to n+sod(n) for n = 1816579898 and 1816579907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1746192 + ... + 1747231.

It is an arithmetic number, because the mean of its divisors is an integer number (137553570).

Almost surely, 2^1816579960 is an apocalyptic number.

1816579960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1816579960 is an abundant number, since it is smaller than the sum of its proper divisors (2585134280).

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

1816579960 is a wasteful number, since it uses less digits than its factorization.

1816579960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3493447 (or 3493443 counting only the distinct ones).

The product of its (nonzero) digits is 816480, while the sum is 52.

The square root of 1816579960 is about 42621.3556799875. The cubic root of 1816579960 is about 1220.1639034471.

The spelling of 1816579960 in words is "one billion, eight hundred sixteen million, five hundred seventy-nine thousand, nine hundred sixty".