2642378545 has 16 divisors (see below), whose sum is σ = 3368376000. Its totient is φ = 1984264128.

The previous prime is 2642378539. The next prime is 2642378581. The reversal of 2642378545 is 5458732462.

It is a cyclic number.

It is not a de Polignac number, because 2642378545 - 2⁹ = 2642378033 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2642378495 and 2642378504.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 117235 + ... + 137944.

It is an arithmetic number, because the mean of its divisors is an integer number (210523500).

Almost surely, 2^2642378545 is an apocalyptic number.

It is an amenable number.

2642378545 is a deficient number, since it is larger than the sum of its proper divisors (725997455).

2642378545 is a wasteful number, since it uses less digits than its factorization.

2642378545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255312.

The product of its digits is 1612800, while the sum is 46.

The square root of 2642378545 is about 51404.0712881772. The cubic root of 2642378545 is about 1382.4995909210.

The spelling of 2642378545 in words is "two billion, six hundred forty-two million, three hundred seventy-eight thousand, five hundred forty-five".