3216139369 has 2 divisors, whose sum is σ = 3216139370. Its totient is φ = 3216139368.

The previous prime is 3216139337. The next prime is 3216139379. The reversal of 3216139369 is 9639316123.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1870130025 + 1346009344 = 43245^2 + 36688^2 .

It is a cyclic number.

It is not a de Polignac number, because 3216139369 - 2⁵ = 3216139337 is a prime.

It is a super-2 number, since 2×3216139369² = 20687104881663436322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3216139379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1608069684 + 1608069685.

It is an arithmetic number, because the mean of its divisors is an integer number (1608069685).

Almost surely, 2^3216139369 is an apocalyptic number.

It is an amenable number.

3216139369 is a deficient number, since it is larger than the sum of its proper divisors (1).

3216139369 is an equidigital number, since it uses as much as digits as its factorization.

3216139369 is an evil number, because the sum of its binary digits is even.

The product of its digits is 157464, while the sum is 43.

The square root of 3216139369 is about 56711.0162931330. The cubic root of 3216139369 is about 1476.0858604208.

The spelling of 3216139369 in words is "three billion, two hundred sixteen million, one hundred thirty-nine thousand, three hundred sixty-nine".