2978850517 has 16 divisors (see below), whose sum is σ = 3200135040. Its totient is φ = 2762970112.

The previous prime is 2978850509. The next prime is 2978850541. The reversal of 2978850517 is 7150588792.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2978850517 - 2³ = 2978850509 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2978853517) 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 in 15 ways as a sum of consecutive naturals, for example, 339528 + ... + 348190.

It is an arithmetic number, because the mean of its divisors is an integer number (200008440).

Almost surely, 2^2978850517 is an apocalyptic number.

It is an amenable number.

2978850517 is a deficient number, since it is larger than the sum of its proper divisors (221284523).

2978850517 is a wasteful number, since it uses less digits than its factorization.

2978850517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8972.

The product of its (nonzero) digits is 1411200, while the sum is 52.

The square root of 2978850517 is about 54578.8467906752. The cubic root of 2978850517 is about 1438.8523708919.

The spelling of 2978850517 in words is "two billion, nine hundred seventy-eight million, eight hundred fifty thousand, five hundred seventeen".