4537922981 has 2 divisors, whose sum is σ = 4537922982. Its totient is φ = 4537922980.

The previous prime is 4537922971. The next prime is 4537923059. The reversal of 4537922981 is 1892297354.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2729122081 + 1808800900 = 52241^2 + 42530^2 .

It is a cyclic number.

It is not a de Polignac number, because 4537922981 - 2¹⁸ = 4537660837 is a prime.

It is a super-2 number, since 2×4537922981² = 41185489962975852722, 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 (4537922951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2268961490 + 2268961491.

It is an arithmetic number, because the mean of its divisors is an integer number (2268961491).

Almost surely, 2^4537922981 is an apocalyptic number.

It is an amenable number.

4537922981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4537922981 is an equidigital number, since it uses as much as digits as its factorization.

4537922981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 50.

The square root of 4537922981 is about 67364.1075128291. The cubic root of 4537922981 is about 1655.5883951247.

The spelling of 4537922981 in words is "four billion, five hundred thirty-seven million, nine hundred twenty-two thousand, nine hundred eighty-one".