2078640594 has 24 divisors (see below), whose sum is σ = 4699536192. Its totient is φ = 662754840.

The previous prime is 2078640559. The next prime is 2078640607. The reversal of 2078640594 is 4950468702.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2510022 + ... + 2510849.

It is an arithmetic number, because the mean of its divisors is an integer number (195814008).

Almost surely, 2^2078640594 is an apocalyptic number.

2078640594 is an abundant number, since it is smaller than the sum of its proper divisors (2620895598).

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

2078640594 is a wasteful number, since it uses less digits than its factorization.

2078640594 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5020902 (or 5020899 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 2078640594 is about 45592.1110939162. Note that the first 3 decimals coincide. The cubic root of 2078640594 is about 1276.2227089543. Note that the first 3 decimals are identical.

The spelling of 2078640594 in words is "two billion, seventy-eight million, six hundred forty thousand, five hundred ninety-four".