2168657516 has 6 divisors (see below), whose sum is σ = 3795150660. Its totient is φ = 1084328756.

The previous prime is 2168657507. The next prime is 2168657521. The reversal of 2168657516 is 6157568612.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271082186 + ... + 271082193.

It is an arithmetic number, because the mean of its divisors is an integer number (632525110).

Almost surely, 2^2168657516 is an apocalyptic number.

It is an amenable number.

2168657516 is a deficient number, since it is larger than the sum of its proper divisors (1626493144).

2168657516 is a wasteful number, since it uses less digits than its factorization.

2168657516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542164383 (or 542164381 counting only the distinct ones).

The product of its digits is 604800, while the sum is 47.

The square root of 2168657516 is about 46568.8470546566. The cubic root of 2168657516 is about 1294.3855536784.

The spelling of 2168657516 in words is "two billion, one hundred sixty-eight million, six hundred fifty-seven thousand, five hundred sixteen".