2156200845 has 16 divisors (see below), whose sum is σ = 3631496640. Its totient is φ = 1089448704.

The previous prime is 2156200841. The next prime is 2156200847. The reversal of 2156200845 is 5480026512.

It is not a de Polignac number, because 2156200845 - 2² = 2156200841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2156200841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3782524 + ... + 3783093.

It is an arithmetic number, because the mean of its divisors is an integer number (226968540).

Almost surely, 2^2156200845 is an apocalyptic number.

It is an amenable number.

2156200845 is a deficient number, since it is larger than the sum of its proper divisors (1475295795).

2156200845 is a wasteful number, since it uses less digits than its factorization.

2156200845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7565644.

The product of its (nonzero) digits is 19200, while the sum is 33.

The square root of 2156200845 is about 46434.9097662524. The cubic root of 2156200845 is about 1291.9024959806.

The spelling of 2156200845 in words is "two billion, one hundred fifty-six million, two hundred thousand, eight hundred forty-five".