2904230981 has 2 divisors, whose sum is σ = 2904230982. Its totient is φ = 2904230980.

The previous prime is 2904230971. The next prime is 2904230993. The reversal of 2904230981 is 1890324092.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2871352225 + 32878756 = 53585^2 + 5734^2 .

It is a cyclic number.

It is not a de Polignac number, because 2904230981 - 2²⁶ = 2837122117 is a prime.

It is a super-2 number, since 2×2904230981² = 16869115182000444722, 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 (2904230971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1452115490 + 1452115491.

It is an arithmetic number, because the mean of its divisors is an integer number (1452115491).

Almost surely, 2^2904230981 is an apocalyptic number.

It is an amenable number.

2904230981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2904230981 is an equidigital number, since it uses as much as digits as its factorization.

2904230981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 2904230981 is about 53890.9174258520. The cubic root of 2904230981 is about 1426.7363229582.

The spelling of 2904230981 in words is "two billion, nine hundred four million, two hundred thirty thousand, nine hundred eighty-one".