2155001370 has 16 divisors (see below), whose sum is σ = 5172003360. Its totient is φ = 574667024.

The previous prime is 2155001357. The next prime is 2155001377. The reversal of 2155001370 is 731005512.

It is a self number, because there is not a number n which added to its sum of digits gives 2155001370.

It is not an unprimeable number, because it can be changed into a prime (2155001377) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35916660 + ... + 35916719.

It is an arithmetic number, because the mean of its divisors is an integer number (323250210).

Almost surely, 2^2155001370 is an apocalyptic number.

2155001370 is an abundant number, since it is smaller than the sum of its proper divisors (3017001990).

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

2155001370 is a wasteful number, since it uses less digits than its factorization.

2155001370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71833389.

The product of its (nonzero) digits is 1050, while the sum is 24.

The square root of 2155001370 is about 46421.9923096801. The cubic root of 2155001370 is about 1291.6628936599.

Adding to 2155001370 its reverse (731005512), we get a palindrome (2886006882).

The spelling of 2155001370 in words is "two billion, one hundred fifty-five million, one thousand, three hundred seventy".