2925803981 has 2 divisors, whose sum is σ = 2925803982. Its totient is φ = 2925803980.

The previous prime is 2925803927. The next prime is 2925804043. The reversal of 2925803981 is 1893085292.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2514119881 + 411684100 = 50141^2 + 20290^2 .

It is a cyclic number.

It is not a de Polignac number, because 2925803981 - 2⁶ = 2925803917 is a prime.

It is a super-2 number, since 2×2925803981² = 17120657870470896722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2925803081) 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 as a sum of consecutive naturals, namely, 1462901990 + 1462901991.

It is an arithmetic number, because the mean of its divisors is an integer number (1462901991).

Almost surely, 2^2925803981 is an apocalyptic number.

It is an amenable number.

2925803981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2925803981 is an equidigital number, since it uses as much as digits as its factorization.

2925803981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 2925803981 is about 54090.7014282492. The cubic root of 2925803981 is about 1430.2602719565.

The spelling of 2925803981 in words is "two billion, nine hundred twenty-five million, eight hundred three thousand, nine hundred eighty-one".