1816193232 has 400 divisors, whose sum is σ = 6501905280. Its totient is φ = 483646464.

The previous prime is 1816193227. The next prime is 1816193243. The reversal of 1816193232 is 2323916181.

1816193232 is a `hidden beast` number, since 1 + 8 + 1 + 619 + 3 + 2 + 32 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 17632893 + ... + 17632995.

Almost surely, 2^1816193232 is an apocalyptic number.

1816193232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1816193232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3250952640).

1816193232 is an abundant number, since it is smaller than the sum of its proper divisors (4685712048).

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

1816193232 is a wasteful number, since it uses less digits than its factorization.

1816193232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165 (or 132 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 1816193232 is about 42616.8186517952. The cubic root of 1816193232 is about 1220.0773112343.

The spelling of 1816193232 in words is "one billion, eight hundred sixteen million, one hundred ninety-three thousand, two hundred thirty-two".