1485971811 has 10 divisors (see below), whose sum is σ = 2219785172. Its totient is φ = 990647820.

The previous prime is 1485971807. The next prime is 1485971843. The reversal of 1485971811 is 1181795841.

1485971811 is a `hidden beast` number, since 1 + 48 + 597 + 1 + 8 + 11 = 666.

It is not a de Polignac number, because 1485971811 - 2² = 1485971807 is a prime.

It is a super-2 number, since 2×1485971811² = 4416224446173239442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1485971801) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 9172585 + ... + 9172746.

Almost surely, 2^1485971811 is an apocalyptic number.

1485971811 is a deficient number, since it is larger than the sum of its proper divisors (733813361).

1485971811 is an equidigital number, since it uses as much as digits as its factorization.

1485971811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18345343 (or 18345334 counting only the distinct ones).

The product of its digits is 80640, while the sum is 45.

The square root of 1485971811 is about 38548.3049043664. The cubic root of 1485971811 is about 1141.1345560828.

The spelling of 1485971811 in words is "one billion, four hundred eighty-five million, nine hundred seventy-one thousand, eight hundred eleven".