2978917112 has 8 divisors (see below), whose sum is σ = 5585469600. Its totient is φ = 1489458552.

The previous prime is 2978917111. The next prime is 2978917133. The reversal of 2978917112 is 2117198792.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978917111) 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 as a sum of consecutive naturals, namely, 186182312 + ... + 186182327.

It is an arithmetic number, because the mean of its divisors is an integer number (698183700).

Almost surely, 2^2978917112 is an apocalyptic number.

It is an amenable number.

2978917112 is a deficient number, since it is larger than the sum of its proper divisors (2606552488).

2978917112 is a wasteful number, since it uses less digits than its factorization.

2978917112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372364645 (or 372364641 counting only the distinct ones).

The product of its digits is 127008, while the sum is 47.

The square root of 2978917112 is about 54579.4568679462. The cubic root of 2978917112 is about 1438.8630931105.

The spelling of 2978917112 in words is "two billion, nine hundred seventy-eight million, nine hundred seventeen thousand, one hundred twelve".