1481219018 has 4 divisors (see below), whose sum is σ = 2221828530. Its totient is φ = 740609508.

The previous prime is 1481219011. The next prime is 1481219023. The reversal of 1481219018 is 8109121841.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8109121841 = 643 ⋅12611387.

It can be written as a sum of positive squares in only one way, i.e., 1480941289 + 277729 = 38483^2 + 527^2 .

It is not an unprimeable number, because it can be changed into a prime (1481219011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 370304753 + ... + 370304756.

Almost surely, 2^1481219018 is an apocalyptic number.

1481219018 is a deficient number, since it is larger than the sum of its proper divisors (740609512).

1481219018 is an equidigital number, since it uses as much as digits as its factorization.

1481219018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740609511.

The product of its (nonzero) digits is 4608, while the sum is 35.

The square root of 1481219018 is about 38486.6082943145. The cubic root of 1481219018 is about 1139.9166395391.

The spelling of 1481219018 in words is "one billion, four hundred eighty-one million, two hundred nineteen thousand, eighteen".