2978078814 has 12 divisors (see below), whose sum is σ = 6452504136. Its totient is φ = 992692932.

The previous prime is 2978078809. The next prime is 2978078833. The reversal of 2978078814 is 4188708792.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 82724394 + ... + 82724429.

It is an arithmetic number, because the mean of its divisors is an integer number (537708678).

Almost surely, 2^2978078814 is an apocalyptic number.

2978078814 is an abundant number, since it is smaller than the sum of its proper divisors (3474425322).

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

2978078814 is a wasteful number, since it uses less digits than its factorization.

2978078814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165448831 (or 165448828 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 54.

The square root of 2978078814 is about 54571.7767165409. The cubic root of 2978078814 is about 1438.7281101429.

The spelling of 2978078814 in words is "two billion, nine hundred seventy-eight million, seventy-eight thousand, eight hundred fourteen".