2321981149 has 2 divisors, whose sum is σ = 2321981150. Its totient is φ = 2321981148.

The previous prime is 2321981147. The next prime is 2321981177. The reversal of 2321981149 is 9411891232.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1966922500 + 355058649 = 44350^2 + 18843^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321981149 - 2¹ = 2321981147 is a prime.

It is a super-2 number, since 2×2321981149² = 10783192912622720402, which contains 22 as substring.

Together with 2321981147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2321981147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160990574 + 1160990575.

It is an arithmetic number, because the mean of its divisors is an integer number (1160990575).

Almost surely, 2^2321981149 is an apocalyptic number.

It is an amenable number.

2321981149 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321981149 is an equidigital number, since it uses as much as digits as its factorization.

2321981149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 40.

The square root of 2321981149 is about 48186.9396102305. The cubic root of 2321981149 is about 1324.1979052428.

The spelling of 2321981149 in words is "two billion, three hundred twenty-one million, nine hundred eighty-one thousand, one hundred forty-nine".