2196980856 has 192 divisors, whose sum is σ = 7348536000. Its totient is φ = 590671872.

The previous prime is 2196980827. The next prime is 2196980923. The reversal of 2196980856 is 6580896912.

It is a happy number.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 417216 + ... + 422448.

It is an arithmetic number, because the mean of its divisors is an integer number (38273625).

Almost surely, 2^2196980856 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 2196980856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3674268000).

2196980856 is an abundant number, since it is smaller than the sum of its proper divisors (5151555144).

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

2196980856 is a wasteful number, since it uses less digits than its factorization.

2196980856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5283 (or 5262 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 54.

The square root of 2196980856 is about 46871.9623655763. The cubic root of 2196980856 is about 1299.9962240521.

The spelling of 2196980856 in words is "two billion, one hundred ninety-six million, nine hundred eighty thousand, eight hundred fifty-six".