7430981 has 2 divisors, whose sum is σ = 7430982. Its totient is φ = 7430980.

The previous prime is 7430947. The next prime is 7430987. The reversal of 7430981 is 1890347.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6806881 + 624100 = 2609^2 + 790^2 .

It is a cyclic number.

It is not a de Polignac number, because 7430981 - 2¹⁴ = 7414597 is a prime.

It is a super-2 number, since 2×7430981² = 110438957244722, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7430987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3715490 + 3715491.

It is an arithmetic number, because the mean of its divisors is an integer number (3715491).

Almost surely, 2^7430981 is an apocalyptic number.

It is an amenable number.

7430981 is a deficient number, since it is larger than the sum of its proper divisors (1).

7430981 is an equidigital number, since it uses as much as digits as its factorization.

7430981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 7430981 is about 2725.9825751461. The cubic root of 7430981 is about 195.1410857126.

The spelling of 7430981 in words is "seven million, four hundred thirty thousand, nine hundred eighty-one".