4509892028981 has 2 divisors, whose sum is σ = 4509892028982. Its totient is φ = 4509892028980.

The previous prime is 4509892028969. The next prime is 4509892029017. The reversal of 4509892028981 is 1898202989054.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3509031844081 + 1000860184900 = 1873241^2 + 1000430^2 .

It is a cyclic number.

It is not a de Polignac number, because 4509892028981 - 2¹⁸ = 4509891766837 is a prime.

It is a super-2 number, since 2×4509892028981² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4509892028881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2254946014490 + 2254946014491.

It is an arithmetic number, because the mean of its divisors is an integer number (2254946014491).

Almost surely, 2^{4509892028981} is an apocalyptic number.

It is an amenable number.

4509892028981 is a deficient number, since it is larger than the sum of its proper divisors (1).

4509892028981 is an equidigital number, since it uses as much as digits as its factorization.

4509892028981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29859840, while the sum is 65.

The spelling of 4509892028981 in words is "four trillion, five hundred nine billion, eight hundred ninety-two million, twenty-eight thousand, nine hundred eighty-one".