3145182561 has 32 divisors (see below), whose sum is σ = 4746240000. Its totient is φ = 2057886864.

The previous prime is 3145182539. The next prime is 3145182629. The reversal of 3145182561 is 1652815413.

3145182561 is a `hidden beast` number, since 3 + 14 + 5 + 1 + 82 + 561 = 666.

It is not a de Polignac number, because 3145182561 - 2⁷ = 3145182433 is a prime.

It is a super-3 number, since 3×3145182561³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (3145182511) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1309840 + ... + 1312238.

It is an arithmetic number, because the mean of its divisors is an integer number (148320000).

Almost surely, 2^3145182561 is an apocalyptic number.

It is an amenable number.

3145182561 is a deficient number, since it is larger than the sum of its proper divisors (1601057439).

3145182561 is a wasteful number, since it uses less digits than its factorization.

3145182561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3290 (or 3284 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 3145182561 is about 56081.9272225911. The cubic root of 3145182561 is about 1465.1495397291.

Adding to 3145182561 its reverse (1652815413), we get a palindrome (4797997974).

The spelling of 3145182561 in words is "three billion, one hundred forty-five million, one hundred eighty-two thousand, five hundred sixty-one".