2978685884 has 6 divisors (see below), whose sum is σ = 5212700304. Its totient is φ = 1489342940.

The previous prime is 2978685877. The next prime is 2978685887. The reversal of 2978685884 is 4885868792.

2978685884 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×2978685884² = 17745139191081722912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2978685884.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978685887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372335732 + ... + 372335739.

It is an arithmetic number, because the mean of its divisors is an integer number (868783384).

Almost surely, 2^2978685884 is an apocalyptic number.

It is an amenable number.

2978685884 is a deficient number, since it is larger than the sum of its proper divisors (2234014420).

2978685884 is a wasteful number, since it uses less digits than its factorization.

2978685884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 744671475 (or 744671473 counting only the distinct ones).

The product of its digits is 61931520, while the sum is 65.

The square root of 2978685884 is about 54577.3385573170. The cubic root of 2978685884 is about 1438.8258632457.

The spelling of 2978685884 in words is "two billion, nine hundred seventy-eight million, six hundred eighty-five thousand, eight hundred eighty-four".