1481441840 has 40 divisors (see below), whose sum is σ = 3462421248. Its totient is φ = 589468160.

The previous prime is 1481441839. The next prime is 1481441867. The reversal of 1481441840 is 481441841.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 1481441840.

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, 33197 + ... + 63756.

Almost surely, 2^1481441840 is an apocalyptic number.

1481441840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1481441840 is an abundant number, since it is smaller than the sum of its proper divisors (1980979408).

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

1481441840 is a wasteful number, since it uses less digits than its factorization.

1481441840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97157 (or 97151 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 35.

The square root of 1481441840 is about 38489.5029845801. The cubic root of 1481441840 is about 1139.9737964635.

Subtracting from 1481441840 its reverse (481441841), we obtain a palindrome (999999999).

The spelling of 1481441840 in words is "one billion, four hundred eighty-one million, four hundred forty-one thousand, eight hundred forty".