1815232122 has 24 divisors (see below), whose sum is σ = 4290549120. Its totient is φ = 550070280.

The previous prime is 1815232121. The next prime is 1815232123. The reversal of 1815232122 is 2212325181.

1815232122 is a `hidden beast` number, since 18 + 1 + 523 + 2 + 122 = 666.

It is an interprime number because it is at equal distance from previous prime (1815232121) and next prime (1815232123).

It is not an unprimeable number, because it can be changed into a prime (1815232121) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 4583722 + ... + 4584117.

It is an arithmetic number, because the mean of its divisors is an integer number (178772880).

Almost surely, 2^1815232122 is an apocalyptic number.

1815232122 is an abundant number, since it is smaller than the sum of its proper divisors (2475316998).

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

1815232122 is a wasteful number, since it uses less digits than its factorization.

1815232122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9167858 (or 9167855 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 1815232122 is about 42605.5409776710. The cubic root of 1815232122 is about 1219.8620559792.

The spelling of 1815232122 in words is "one billion, eight hundred fifteen million, two hundred thirty-two thousand, one hundred twenty-two".