1816259370 has 64 divisors (see below), whose sum is σ = 4501664640. Its totient is φ = 468695808.

The previous prime is 1816259359. The next prime is 1816259371. The reversal of 1816259370 is 739526181.

It is a super-2 number, since 2×1816259370² = 6597596198225593800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1816259371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 134152 + ... + 147068.

It is an arithmetic number, because the mean of its divisors is an integer number (70338510).

Almost surely, 2^1816259370 is an apocalyptic number.

1816259370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1816259370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2250832320).

1816259370 is an abundant number, since it is smaller than the sum of its proper divisors (2685405270).

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

1816259370 is a wasteful number, since it uses less digits than its factorization.

1816259370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13079.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 1816259370 is about 42617.5946059840. The cubic root of 1816259370 is about 1220.0921210560.

The spelling of 1816259370 in words is "one billion, eight hundred sixteen million, two hundred fifty-nine thousand, three hundred seventy".