1481812673 has 4 divisors (see below), whose sum is σ = 1616522928. Its totient is φ = 1347102420.

The previous prime is 1481812639. The next prime is 1481812691. The reversal of 1481812673 is 3762181841.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3762181841 = 11 ⋅342016531.

It is a cyclic number.

It is not a de Polignac number, because 1481812673 - 2⁶ = 1481812609 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1481812673.

It is not an unprimeable number, because it can be changed into a prime (1481812613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 67355111 + ... + 67355132.

It is an arithmetic number, because the mean of its divisors is an integer number (404130732).

Almost surely, 2^1481812673 is an apocalyptic number.

It is an amenable number.

1481812673 is a deficient number, since it is larger than the sum of its proper divisors (134710255).

1481812673 is a wasteful number, since it uses less digits than its factorization.

1481812673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134710254.

The product of its digits is 64512, while the sum is 41.

The square root of 1481812673 is about 38494.3200095806. The cubic root of 1481812673 is about 1140.0689075512.

The spelling of 1481812673 in words is "one billion, four hundred eighty-one million, eight hundred twelve thousand, six hundred seventy-three".