2942989686 has 360 divisors, whose sum is σ = 8829263520. Its totient is φ = 726014016.

The previous prime is 2942989661. The next prime is 2942989691. The reversal of 2942989686 is 6869892492.

It is a super-2 number, since 2×2942989686² = 17322376583804757192, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 179 ways as a sum of consecutive naturals, for example, 37252995 + ... + 37253073.

It is an arithmetic number, because the mean of its divisors is an integer number (24525732).

Almost surely, 2^2942989686 is an apocalyptic number.

2942989686 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 2942989686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4414631760).

2942989686 is an abundant number, since it is smaller than the sum of its proper divisors (5886273834).

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

2942989686 is a wasteful number, since it uses less digits than its factorization.

2942989686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158 (or 123 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 63.

The square root of 2942989686 is about 54249.3288990749. The cubic root of 2942989686 is about 1433.0551802177.

The spelling of 2942989686 in words is "two billion, nine hundred forty-two million, nine hundred eighty-nine thousand, six hundred eighty-six".