3162181815 has 192 divisors, whose sum is σ = 6678650880. Its totient is φ = 1412536320.

The previous prime is 3162181811. The next prime is 3162181817. The reversal of 3162181815 is 5181812613.

3162181815 is a `hidden beast` number, since 3 + 1 + 621 + 8 + 18 + 15 = 666.

It is not a de Polignac number, because 3162181815 - 2² = 3162181811 is a prime.

It is a super-2 number, since 2×3162181815² = 19998787662233388450, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3162181815.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3162181811) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 12023374 + ... + 12023636.

It is an arithmetic number, because the mean of its divisors is an integer number (34784640).

Almost surely, 2^3162181815 is an apocalyptic number.

3162181815 is an abundant number, since it is smaller than the sum of its proper divisors (3516469065).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3162181815 is a wasteful number, since it uses less digits than its factorization.

3162181815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 332 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 3162181815 is about 56233.2803151301. The cubic root of 3162181815 is about 1467.7844383435.

The spelling of 3162181815 in words is "three billion, one hundred sixty-two million, one hundred eighty-one thousand, eight hundred fifteen".