1818402132 has 24 divisors (see below), whose sum is σ = 4243978816. Its totient is φ = 605985408.

The previous prime is 1818402121. The next prime is 1818402169. The reversal of 1818402132 is 2312048181.

It is a self number, because there is not a number n which added to its sum of digits gives 1818402132.

It is a congruent number.

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, 39708 + ... + 72204.

Almost surely, 2^1818402132 is an apocalyptic number.

1818402132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1818402132 is an abundant number, since it is smaller than the sum of its proper divisors (2425576684).

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

1818402132 is a wasteful number, since it uses less digits than its factorization.

1818402132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37167 (or 37165 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 30.

The square root of 1818402132 is about 42642.7266013795. The cubic root of 1818402132 is about 1220.5717404385.

The spelling of 1818402132 in words is "one billion, eight hundred eighteen million, four hundred two thousand, one hundred thirty-two".