3099661812 has 72 divisors (see below), whose sum is σ = 8520022784. Its totient is φ = 944467776.

The previous prime is 3099661811. The next prime is 3099661813. The reversal of 3099661812 is 2181669903.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (3099661811) and next prime (3099661813).

It is a super-2 number, since 2×3099661812² = 19215806697542246688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3099661811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16053 + ... + 80355.

Almost surely, 2^3099661812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3099661812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4260011392).

3099661812 is an abundant number, since it is smaller than the sum of its proper divisors (5420360972).

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

3099661812 is a wasteful number, since it uses less digits than its factorization.

3099661812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64429 (or 64424 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 45.

The square root of 3099661812 is about 55674.6065275723. The cubic root of 3099661812 is about 1458.0467111207.

The spelling of 3099661812 in words is "three billion, ninety-nine million, six hundred sixty-one thousand, eight hundred twelve".