2078639492 has 12 divisors (see below), whose sum is σ = 3654860496. Its totient is φ = 1034393640.

The previous prime is 2078639473. The next prime is 2078639503. The reversal of 2078639492 is 2949368702.

It is a self number, because there is not a number n which added to its sum of digits gives 2078639492.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1230578 + ... + 1232265.

It is an arithmetic number, because the mean of its divisors is an integer number (304571708).

Almost surely, 2^2078639492 is an apocalyptic number.

It is an amenable number.

2078639492 is a deficient number, since it is larger than the sum of its proper divisors (1576221004).

2078639492 is a wasteful number, since it uses less digits than its factorization.

2078639492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2463058 (or 2463056 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 2078639492 is about 45592.0990084905. The cubic root of 2078639492 is about 1276.2224834226. Note that the first 3 decimals are identical.

The spelling of 2078639492 in words is "two billion, seventy-eight million, six hundred thirty-nine thousand, four hundred ninety-two".