2078781464 has 16 divisors (see below), whose sum is σ = 3899491200. Its totient is φ = 1038917152.

The previous prime is 2078781433. The next prime is 2078781479. The reversal of 2078781464 is 4641878702.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 40184 + ... + 75975.

It is an arithmetic number, because the mean of its divisors is an integer number (243718200).

Almost surely, 2^2078781464 is an apocalyptic number.

It is an amenable number.

2078781464 is a deficient number, since it is larger than the sum of its proper divisors (1820709736).

2078781464 is a wasteful number, since it uses less digits than its factorization.

2078781464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118402 (or 118398 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 47.

The square root of 2078781464 is about 45593.6559622060. The cubic root of 2078781464 is about 1276.2515382818.

The spelling of 2078781464 in words is "two billion, seventy-eight million, seven hundred eighty-one thousand, four hundred sixty-four".