1481279820 has 48 divisors (see below), whose sum is σ = 4281381888. Its totient is φ = 382265280.

The previous prime is 1481279801. The next prime is 1481279827. The reversal of 1481279820 is 289721841.

It is not an unprimeable number, because it can be changed into a prime (1481279827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396334 + ... + 400053.

It is an arithmetic number, because the mean of its divisors is an integer number (89195456).

Almost surely, 2^1481279820 is an apocalyptic number.

1481279820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1481279820 is an abundant number, since it is smaller than the sum of its proper divisors (2800102068).

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

1481279820 is a wasteful number, since it uses less digits than its factorization.

1481279820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 796430 (or 796428 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 1481279820 is about 38487.3981973321. The cubic root of 1481279820 is about 1139.9322366616.

The spelling of 1481279820 in words is "one billion, four hundred eighty-one million, two hundred seventy-nine thousand, eight hundred twenty".