2142658945 has 32 divisors (see below), whose sum is σ = 3009747456. Its totient is φ = 1434048000.

The previous prime is 2142658907. The next prime is 2142658949. The reversal of 2142658945 is 5498562412.

2142658945 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-2142658945 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2142658895 and 2142658904.

It is not an unprimeable number, because it can be changed into a prime (2142658949) 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 31 ways as a sum of consecutive naturals, for example, 246717 + ... + 255253.

It is an arithmetic number, because the mean of its divisors is an integer number (94054608).

Almost surely, 2^2142658945 is an apocalyptic number.

It is an amenable number.

2142658945 is a deficient number, since it is larger than the sum of its proper divisors (867088511).

2142658945 is a wasteful number, since it uses less digits than its factorization.

2142658945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8721.

The product of its digits is 691200, while the sum is 46.

The square root of 2142658945 is about 46288.8641575919. The cubic root of 2142658945 is about 1289.1922401388.

The spelling of 2142658945 in words is "two billion, one hundred forty-two million, six hundred fifty-eight thousand, nine hundred forty-five".