2113404949 has 2 divisors, whose sum is σ = 2113404950. Its totient is φ = 2113404948.

The previous prime is 2113404913. The next prime is 2113404959. The reversal of 2113404949 is 9494043112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1859161924 + 254243025 = 43118^2 + 15945^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113404949 - 2¹³ = 2113396757 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2113404959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056702474 + 1056702475.

It is an arithmetic number, because the mean of its divisors is an integer number (1056702475).

Almost surely, 2^2113404949 is an apocalyptic number.

It is an amenable number.

2113404949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113404949 is an equidigital number, since it uses as much as digits as its factorization.

2113404949 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 2113404949 is about 45971.7842703544. The cubic root of 2113404949 is about 1283.2981652850.

The spelling of 2113404949 in words is "two billion, one hundred thirteen million, four hundred four thousand, nine hundred forty-nine".