1481506440 has 32 divisors (see below), whose sum is σ = 4444519680. Its totient is φ = 395068352.

The previous prime is 1481506427. The next prime is 1481506447. The reversal of 1481506440 is 446051841.

1481506440 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1481506440² = 4389722663522947200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1481506447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6172824 + ... + 6173063.

It is an arithmetic number, because the mean of its divisors is an integer number (138891240).

Almost surely, 2^1481506440 is an apocalyptic number.

1481506440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1481506440 is an abundant number, since it is smaller than the sum of its proper divisors (2963013240).

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

1481506440 is a wasteful number, since it uses less digits than its factorization.

1481506440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12345901 (or 12345897 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 33.

The square root of 1481506440 is about 38490.3421652757. The cubic root of 1481506440 is about 1139.9903661851.

The spelling of 1481506440 in words is "one billion, four hundred eighty-one million, five hundred six thousand, four hundred forty".