1816215114 has 16 divisors (see below), whose sum is σ = 4151348928. Its totient is φ = 518918592.

The previous prime is 1816215097. The next prime is 1816215131. The reversal of 1816215114 is 4115126181.

It is an interprime number because it is at equal distance from previous prime (1816215097) and next prime (1816215131).

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, 21621567 + ... + 21621650.

It is an arithmetic number, because the mean of its divisors is an integer number (259459308).

Almost surely, 2^1816215114 is an apocalyptic number.

1816215114 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1816215114 is an abundant number, since it is smaller than the sum of its proper divisors (2335133814).

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

1816215114 is a wasteful number, since it uses less digits than its factorization.

1816215114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43243229.

The product of its digits is 1920, while the sum is 30.

The square root of 1816215114 is about 42617.0753806499. The cubic root of 1816215114 is about 1220.0822111580.

The spelling of 1816215114 in words is "one billion, eight hundred sixteen million, two hundred fifteen thousand, one hundred fourteen".