1616123646 has 24 divisors (see below), whose sum is σ = 3502403424. Its totient is φ = 538584480.

The previous prime is 1616123633. The next prime is 1616123659. The reversal of 1616123646 is 6463216161.

It is a happy number.

1616123646 is a `hidden beast` number, since 1 + 6 + 1 + 6 + 1 + 2 + 3 + 646 = 666.

It is an interprime number because it is at equal distance from previous prime (1616123633) and next prime (1616123659).

It is a super-2 number, since 2×1616123646² = 5223711278320666632, 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 1616123646.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 106026 + ... + 120306.

It is an arithmetic number, because the mean of its divisors is an integer number (145933476).

Almost surely, 2^1616123646 is an apocalyptic number.

1616123646 is an abundant number, since it is smaller than the sum of its proper divisors (1886279778).

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

1616123646 is a wasteful number, since it uses less digits than its factorization.

1616123646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20576 (or 20573 counting only the distinct ones).

The product of its digits is 31104, while the sum is 36.

The square root of 1616123646 is about 40201.0403596723. The cubic root of 1616123646 is about 1173.5227903184.

The spelling of 1616123646 in words is "one billion, six hundred sixteen million, one hundred twenty-three thousand, six hundred forty-six".