9420181541 has 2 divisors, whose sum is σ = 9420181542. Its totient is φ = 9420181540.

The previous prime is 9420181499. The next prime is 9420181543. The reversal of 9420181541 is 1451810249.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5163141025 + 4257040516 = 71855^2 + 65246^2 .

It is an emirp because it is prime and its reverse (1451810249) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9420181541 is a prime.

Together with 9420181543, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9420181543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4710090770 + 4710090771.

It is an arithmetic number, because the mean of its divisors is an integer number (4710090771).

Almost surely, 2^9420181541 is an apocalyptic number.

It is an amenable number.

9420181541 is a deficient number, since it is larger than the sum of its proper divisors (1).

9420181541 is an equidigital number, since it uses as much as digits as its factorization.

9420181541 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 9420181541 is about 97057.6196957251. The cubic root of 9420181541 is about 2111.9635772822.

The spelling of 9420181541 in words is "nine billion, four hundred twenty million, one hundred eighty-one thousand, five hundred forty-one".