1442881188 has 120 divisors (see below), whose sum is σ = 4564530432. Its totient is φ = 387991296.

The previous prime is 1442881183. The next prime is 1442881189. The reversal of 1442881188 is 8811882441.

It is a super-2 number, since 2×1442881188² = 4163812245368582688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1442881183) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19845 + ... + 57267.

Almost surely, 2^1442881188 is an apocalyptic number.

1442881188 is a gapful number since it is divisible by the number (18) 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 1442881188, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2282265216).

1442881188 is an abundant number, since it is smaller than the sum of its proper divisors (3121649244).

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

1442881188 is a wasteful number, since it uses less digits than its factorization.

1442881188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37463 (or 37452 counting only the distinct ones).

The product of its digits is 131072, while the sum is 45.

The square root of 1442881188 is about 37985.2759368680. The cubic root of 1442881188 is about 1129.9958722798.

The spelling of 1442881188 in words is "one billion, four hundred forty-two million, eight hundred eighty-one thousand, one hundred eighty-eight".