2156397337 has 8 divisors (see below), whose sum is σ = 2218245120. Its totient is φ = 2094990240.

The previous prime is 2156397281. The next prime is 2156397359. The reversal of 2156397337 is 7337936512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2156397337 - 2¹⁵ = 2156364569 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2156397137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 100233 + ... + 119830.

It is an arithmetic number, because the mean of its divisors is an integer number (277280640).

Almost surely, 2^2156397337 is an apocalyptic number.

It is an amenable number.

2156397337 is a deficient number, since it is larger than the sum of its proper divisors (61847783).

2156397337 is a wasteful number, since it uses less digits than its factorization.

2156397337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220343.

The product of its digits is 714420, while the sum is 46.

The square root of 2156397337 is about 46437.0254969028. The cubic root of 2156397337 is about 1291.9417379642.

The spelling of 2156397337 in words is "two billion, one hundred fifty-six million, three hundred ninety-seven thousand, three hundred thirty-seven".