1481543999 has 16 divisors (see below), whose sum is σ = 1714593888. Its totient is φ = 1267909632.

The previous prime is 1481543969. The next prime is 1481544037. The reversal of 1481543999 is 9993451841.

It is a Cunningham number, because it is equal to 1140³-1.

It is a cyclic number.

It is not a de Polignac number, because 1481543999 - 2⁸ = 1481543743 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1481543999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1481543969) 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, 35222 + ... + 64835.

It is an arithmetic number, because the mean of its divisors is an integer number (107162118).

Almost surely, 2^1481543999 is an apocalyptic number.

1481543999 is a deficient number, since it is larger than the sum of its proper divisors (233049889).

1481543999 is a wasteful number, since it uses less digits than its factorization.

1481543999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100154.

The product of its digits is 1399680, while the sum is 53.

The square root of 1481543999 is about 38490.8300637957. The cubic root of 1481543999 is about 1139.9999997435. Note that the first 6 decimals are identical.

The spelling of 1481543999 in words is "one billion, four hundred eighty-one million, five hundred forty-three thousand, nine hundred ninety-nine".