1816735144 has 32 divisors (see below), whose sum is σ = 3903655680. Its totient is φ = 776470464.

The previous prime is 1816735121. The next prime is 1816735153. The reversal of 1816735144 is 4415376181.

It is a junction number, because it is equal to n+sod(n) for n = 1816735097 and 1816735106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23647 + ... + 64750.

It is an arithmetic number, because the mean of its divisors is an integer number (121989240).

Almost surely, 2^1816735144 is an apocalyptic number.

1816735144 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1816735144 is an abundant number, since it is smaller than the sum of its proper divisors (2086920536).

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

1816735144 is a wasteful number, since it uses less digits than its factorization.

1816735144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88777 (or 88773 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 1816735144 is about 42623.1761369328. The cubic root of 1816735144 is about 1220.1986472198.

The spelling of 1816735144 in words is "one billion, eight hundred sixteen million, seven hundred thirty-five thousand, one hundred forty-four".