2111346989 has 2 divisors, whose sum is σ = 2111346990. Its totient is φ = 2111346988.

The previous prime is 2111346973. The next prime is 2111347003. The reversal of 2111346989 is 9896431112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1318924489 + 792422500 = 36317^2 + 28150^2 .

It is a cyclic number.

It is not a de Polignac number, because 2111346989 - 2⁴ = 2111346973 is a prime.

It is a super-2 number, since 2×2111346989² = 8915572215918732242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2111346929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1055673494 + 1055673495.

It is an arithmetic number, because the mean of its divisors is an integer number (1055673495).

Almost surely, 2^2111346989 is an apocalyptic number.

It is an amenable number.

2111346989 is a deficient number, since it is larger than the sum of its proper divisors (1).

2111346989 is an equidigital number, since it uses as much as digits as its factorization.

2111346989 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 44.

The square root of 2111346989 is about 45949.3959590330. The cubic root of 2111346989 is about 1282.8814863475.

The spelling of 2111346989 in words is "two billion, one hundred eleven million, three hundred forty-six thousand, nine hundred eighty-nine".