1481816855401 has 3 divisors (see below), whose sum is σ = 1481818072701. Its totient is φ = 1481815638102.

The previous prime is 1481816855383. The next prime is 1481816855459. The reversal of 1481816855401 is 1045586181841.

The square root of 1481816855401 is 1217299.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1481816855401 - 2¹³ = 1481816847209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1481816855461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 608650 + ... + 1825948.

It is an arithmetic number, because the mean of its divisors is an integer number (493939357567).

Almost surely, 2^{1481816855401} is an apocalyptic number.

1481816855401 is the 1217299-th square number.

1481816855401 is the 608650-th centered octagonal number.

It is an amenable number.

1481816855401 is a deficient number, since it is larger than the sum of its proper divisors (1217300).

1481816855401 is an frugal number, since it uses more digits than its factorization.

1481816855401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2434598 (or 1217299 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 52.

The spelling of 1481816855401 in words is "one trillion, four hundred eighty-one billion, eight hundred sixteen million, eight hundred fifty-five thousand, four hundred one".