2878918940 has 24 divisors (see below), whose sum is σ = 6209129472. Its totient is φ = 1120443840.

The previous prime is 2878918937. The next prime is 2878918951. The reversal of 2878918940 is 498198782.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1944476 + ... + 1945955.

It is an arithmetic number, because the mean of its divisors is an integer number (258713728).

Almost surely, 2^2878918940 is an apocalyptic number.

2878918940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2878918940 is an abundant number, since it is smaller than the sum of its proper divisors (3330210532).

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

2878918940 is a wasteful number, since it uses less digits than its factorization.

2878918940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3890477 (or 3890475 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 56.

The square root of 2878918940 is about 53655.5583327580. The cubic root of 2878918940 is about 1422.5792803007.

The spelling of 2878918940 in words is "two billion, eight hundred seventy-eight million, nine hundred eighteen thousand, nine hundred forty".