1616251163 has 4 divisors (see below), whose sum is σ = 1616468688. Its totient is φ = 1616033640.

The previous prime is 1616251141. The next prime is 1616251199. The reversal of 1616251163 is 3611526161.

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

It is a cyclic number.

It is not a de Polignac number, because 1616251163 - 2⁶ = 1616251099 is a prime.

It is a super-2 number, since 2×1616251163² = 5224535643797705138, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1616251103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97208 + ... + 112613.

It is an arithmetic number, because the mean of its divisors is an integer number (404117172).

Almost surely, 2^1616251163 is an apocalyptic number.

1616251163 is a deficient number, since it is larger than the sum of its proper divisors (217525).

1616251163 is an equidigital number, since it uses as much as digits as its factorization.

1616251163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 217524.

The product of its digits is 6480, while the sum is 32.

The square root of 1616251163 is about 40202.6263196822. The cubic root of 1616251163 is about 1173.5536543286.

The spelling of 1616251163 in words is "one billion, six hundred sixteen million, two hundred fifty-one thousand, one hundred sixty-three".