2108455913 has 2 divisors, whose sum is σ = 2108455914. Its totient is φ = 2108455912.

The previous prime is 2108455903. The next prime is 2108455927. The reversal of 2108455913 is 3195548012.

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., 1525136809 + 583319104 = 39053^2 + 24152^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2108455913 is a prime.

It is not a weakly prime, because it can be changed into another prime (2108455903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1054227956 + 1054227957.

It is an arithmetic number, because the mean of its divisors is an integer number (1054227957).

Almost surely, 2^2108455913 is an apocalyptic number.

It is an amenable number.

2108455913 is a deficient number, since it is larger than the sum of its proper divisors (1).

2108455913 is an equidigital number, since it uses as much as digits as its factorization.

2108455913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 2108455913 is about 45917.9258351246. The cubic root of 2108455913 is about 1282.2956672695.

The spelling of 2108455913 in words is "two billion, one hundred eight million, four hundred fifty-five thousand, nine hundred thirteen".