1616779396 has 24 divisors (see below), whose sum is σ = 2852045280. Its totient is φ = 801928512.

The previous prime is 1616779379. The next prime is 1616779421. The reversal of 1616779396 is 6939776161.

It is a happy number.

It is a super-2 number, since 2×1616779396² = 5227951230660249632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 400275 + ... + 404293.

It is an arithmetic number, because the mean of its divisors is an integer number (118835220).

Almost surely, 2^1616779396 is an apocalyptic number.

It is an amenable number.

1616779396 is a deficient number, since it is larger than the sum of its proper divisors (1235265884).

1616779396 is a wasteful number, since it uses less digits than its factorization.

1616779396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4803 (or 4801 counting only the distinct ones).

The product of its digits is 2571912, while the sum is 55.

The square root of 1616779396 is about 40209.1954159742. The cubic root of 1616779396 is about 1173.6814897088.

The spelling of 1616779396 in words is "one billion, six hundred sixteen million, seven hundred seventy-nine thousand, three hundred ninety-six".