1485949581 has 24 divisors (see below), whose sum is σ = 2222796576. Its totient is φ = 955916640.

The previous prime is 1485949571. The next prime is 1485949601. The reversal of 1485949581 is 1859495841.

1485949581 is a `hidden beast` number, since 1 + 4 + 8 + 59 + 4 + 9 + 581 = 666.

It is not a de Polignac number, because 1485949581 - 2⁷ = 1485949453 is a prime.

It is a super-2 number, since 2×1485949581² = 4416092314548151122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1485949541) 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, 8991 + ... + 55251.

It is an arithmetic number, because the mean of its divisors is an integer number (92616524).

Almost surely, 2^1485949581 is an apocalyptic number.

It is an amenable number.

1485949581 is a deficient number, since it is larger than the sum of its proper divisors (736846995).

1485949581 is a wasteful number, since it uses less digits than its factorization.

1485949581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46393 (or 46390 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 54.

The square root of 1485949581 is about 38548.0165637611. The cubic root of 1485949581 is about 1141.1288656322.

The spelling of 1485949581 in words is "one billion, four hundred eighty-five million, nine hundred forty-nine thousand, five hundred eighty-one".