2156680350 has 192 divisors, whose sum is σ = 6865274880. Its totient is φ = 492019200.

The previous prime is 2156680349. The next prime is 2156680369. The reversal of 2156680350 is 530866512.

It is a super-2 number, since 2×2156680350² = 9302540264152245000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 248179 + ... + 256721.

It is an arithmetic number, because the mean of its divisors is an integer number (35756640).

Almost surely, 2^2156680350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2156680350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3432637440).

2156680350 is an abundant number, since it is smaller than the sum of its proper divisors (4708594530).

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

2156680350 is a wasteful number, since it uses less digits than its factorization.

2156680350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8592 (or 8581 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 2156680350 is about 46440.0726743617. The cubic root of 2156680350 is about 1291.9982551169.

The spelling of 2156680350 in words is "two billion, one hundred fifty-six million, six hundred eighty thousand, three hundred fifty".