1481379840 has 520 divisors, whose sum is σ = 5708799360. Its totient is φ = 366280704.

The previous prime is 1481379817. The next prime is 1481379853. The reversal of 1481379840 is 489731841.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31518697 + ... + 31518743.

Almost surely, 2^1481379840 is an apocalyptic number.

1481379840 is a gapful number since it is divisible by the number (10) 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 1481379840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2854399680).

1481379840 is an abundant number, since it is smaller than the sum of its proper divisors (4227419520).

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

1481379840 is an equidigital number, since it uses as much as digits as its factorization.

1481379840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1481379840 is about 38488.6975617518. The cubic root of 1481379840 is about 1139.9578931816.

The spelling of 1481379840 in words is "one billion, four hundred eighty-one million, three hundred seventy-nine thousand, eight hundred forty".