1485813681 has 24 divisors (see below), whose sum is σ = 2352411360. Its totient is φ = 896212800.

The previous prime is 1485813677. The next prime is 1485813779. The reversal of 1485813681 is 1863185841.

1485813681 is a `hidden beast` number, since 1 + 4 + 8 + 581 + 3 + 68 + 1 = 666.

It is not a de Polignac number, because 1485813681 - 2² = 1485813677 is a prime.

It is a super-2 number, since 2×1485813681² = 4415284589293539522, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1485811681) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14676 + ... + 56453.

It is an arithmetic number, because the mean of its divisors is an integer number (98017140).

Almost surely, 2^1485813681 is an apocalyptic number.

1485813681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1485813681 is a deficient number, since it is larger than the sum of its proper divisors (866597679).

1485813681 is a wasteful number, since it uses less digits than its factorization.

1485813681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71357 (or 71354 counting only the distinct ones).

The product of its digits is 184320, while the sum is 45.

The square root of 1485813681 is about 38546.2537868468. The cubic root of 1485813681 is about 1141.0940766230.

The spelling of 1485813681 in words is "one billion, four hundred eighty-five million, eight hundred thirteen thousand, six hundred eighty-one".