2144378157 has 8 divisors (see below), whose sum is σ = 2859404160. Its totient is φ = 1429468800.

The previous prime is 2144378153. The next prime is 2144378161. The reversal of 2144378157 is 7518734412.

It is an interprime number because it is at equal distance from previous prime (2144378153) and next prime (2144378161).

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

It is not a de Polignac number, because 2144378157 - 2² = 2144378153 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144378153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32157 + ... + 72957.

It is an arithmetic number, because the mean of its divisors is an integer number (357425520).

Almost surely, 2^2144378157 is an apocalyptic number.

It is an amenable number.

2144378157 is a deficient number, since it is larger than the sum of its proper divisors (715026003).

2144378157 is a wasteful number, since it uses less digits than its factorization.

2144378157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58323.

The product of its digits is 188160, while the sum is 42.

The square root of 2144378157 is about 46307.4309047695. The cubic root of 2144378157 is about 1289.5369523708.

The spelling of 2144378157 in words is "two billion, one hundred forty-four million, three hundred seventy-eight thousand, one hundred fifty-seven".