2815161506 has 4 divisors (see below), whose sum is σ = 4222742262. Its totient is φ = 1407580752.

The previous prime is 2815161499. The next prime is 2815161509. The reversal of 2815161506 is 6051615182.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1669948225 + 1145213281 = 40865^2 + 33841^2 .

It is not an unprimeable number, because it can be changed into a prime (2815161509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 703790375 + ... + 703790378.

Almost surely, 2^2815161506 is an apocalyptic number.

2815161506 is a deficient number, since it is larger than the sum of its proper divisors (1407580756).

2815161506 is a wasteful number, since it uses less digits than its factorization.

2815161506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1407580755.

The product of its (nonzero) digits is 14400, while the sum is 35.

The square root of 2815161506 is about 53058.0955745681. The cubic root of 2815161506 is about 1411.9991603731. Note that the first 3 decimals are identical.

Adding to 2815161506 its reverse (6051615182), we get a palindrome (8866776688).

The spelling of 2815161506 in words is "two billion, eight hundred fifteen million, one hundred sixty-one thousand, five hundred six".