1481618531 has 8 divisors (see below), whose sum is σ = 1548767520. Its totient is φ = 1414697152.

The previous prime is 1481618521. The next prime is 1481618539. The reversal of 1481618531 is 1358161841.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1481618531 is a prime.

It is a super-2 number, since 2×1481618531² = 4390386942805195922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1481618539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43520 + ... + 69693.

It is an arithmetic number, because the mean of its divisors is an integer number (193595940).

Almost surely, 2^1481618531 is an apocalyptic number.

1481618531 is a deficient number, since it is larger than the sum of its proper divisors (67148989).

1481618531 is a wasteful number, since it uses less digits than its factorization.

1481618531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113805.

The product of its digits is 23040, while the sum is 38.

The square root of 1481618531 is about 38491.7982302724. The cubic root of 1481618531 is about 1140.0191160742.

The spelling of 1481618531 in words is "one billion, four hundred eighty-one million, six hundred eighteen thousand, five hundred thirty-one".