2155862371 has 8 divisors (see below), whose sum is σ = 2329264784. Its totient is φ = 1983540960.

The previous prime is 2155862347. The next prime is 2155862399. The reversal of 2155862371 is 1732685512.

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 2155862371 - 2¹³ = 2155854179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2155862771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 266100 + ... + 274081.

It is an arithmetic number, because the mean of its divisors is an integer number (291158098).

Almost surely, 2^2155862371 is an apocalyptic number.

2155862371 is a deficient number, since it is larger than the sum of its proper divisors (173402413).

2155862371 is a wasteful number, since it uses less digits than its factorization.

2155862371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540501.

The product of its digits is 100800, while the sum is 40.

The square root of 2155862371 is about 46431.2650161505. The cubic root of 2155862371 is about 1291.8348927717.

The spelling of 2155862371 in words is "two billion, one hundred fifty-five million, eight hundred sixty-two thousand, three hundred seventy-one".