2113897361 has 2 divisors, whose sum is σ = 2113897362. Its totient is φ = 2113897360.

The previous prime is 2113897349. The next prime is 2113897391. The reversal of 2113897361 is 1637983112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1996391761 + 117505600 = 44681^2 + 10840^2 .

It is a cyclic number.

It is not a de Polignac number, because 2113897361 - 2⁶ = 2113897297 is a prime.

It is not a weakly prime, because it can be changed into another prime (2113897301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056948680 + 1056948681.

It is an arithmetic number, because the mean of its divisors is an integer number (1056948681).

Almost surely, 2^2113897361 is an apocalyptic number.

It is an amenable number.

2113897361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113897361 is an equidigital number, since it uses as much as digits as its factorization.

2113897361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 54432, while the sum is 41.

The square root of 2113897361 is about 45977.1395478231. The cubic root of 2113897361 is about 1283.3978247383.

The spelling of 2113897361 in words is "two billion, one hundred thirteen million, eight hundred ninety-seven thousand, three hundred sixty-one".