2978916729 has 32 divisors (see below), whose sum is σ = 4321658880. Its totient is φ = 1819069632.

The previous prime is 2978916679. The next prime is 2978916739. The reversal of 2978916729 is 9276198792.

It is not a de Polignac number, because 2978916729 - 2⁷ = 2978916601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2978916739) 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 31 ways as a sum of consecutive naturals, for example, 215659 + ... + 229055.

It is an arithmetic number, because the mean of its divisors is an integer number (135051840).

Almost surely, 2^2978916729 is an apocalyptic number.

It is an amenable number.

2978916729 is a deficient number, since it is larger than the sum of its proper divisors (1342742151).

2978916729 is a wasteful number, since it uses less digits than its factorization.

2978916729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13549.

The product of its digits is 6858432, while the sum is 60.

The square root of 2978916729 is about 54579.4533593000. The cubic root of 2978916729 is about 1438.8630314456.

The spelling of 2978916729 in words is "two billion, nine hundred seventy-eight million, nine hundred sixteen thousand, seven hundred twenty-nine".