2981806977 has 16 divisors (see below), whose sum is σ = 4052954880. Its totient is φ = 1949306112.

The previous prime is 2981806973. The next prime is 2981806979. The reversal of 2981806977 is 7796081892.

It is not a de Polignac number, because 2981806977 - 2² = 2981806973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2981806973) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 380424 + ... + 388182.

It is an arithmetic number, because the mean of its divisors is an integer number (253309680).

Almost surely, 2^2981806977 is an apocalyptic number.

It is an amenable number.

2981806977 is a deficient number, since it is larger than the sum of its proper divisors (1071147903).

2981806977 is a wasteful number, since it uses less digits than its factorization.

2981806977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10232.

The product of its (nonzero) digits is 3048192, while the sum is 57.

The square root of 2981806977 is about 54605.9243763898. The cubic root of 2981806977 is about 1439.3282259150.

The spelling of 2981806977 in words is "two billion, nine hundred eighty-one million, eight hundred six thousand, nine hundred seventy-seven".