2156346215 has 16 divisors (see below), whose sum is σ = 2754984960. Its totient is φ = 1614620160.

The previous prime is 2156346151. The next prime is 2156346221. The reversal of 2156346215 is 5126436512.

It is not a de Polignac number, because 2156346215 - 2⁶ = 2156346151 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 54695 + ... + 85464.

It is an arithmetic number, because the mean of its divisors is an integer number (172186560).

Almost surely, 2^2156346215 is an apocalyptic number.

2156346215 is a deficient number, since it is larger than the sum of its proper divisors (598638745).

2156346215 is a wasteful number, since it uses less digits than its factorization.

2156346215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140362.

The product of its digits is 43200, while the sum is 35.

The square root of 2156346215 is about 46436.4750492541. The cubic root of 2156346215 is about 1291.9315284717.

The spelling of 2156346215 in words is "two billion, one hundred fifty-six million, three hundred forty-six thousand, two hundred fifteen".