2118877 has 2 divisors, whose sum is σ = 2118878. Its totient is φ = 2118876.

The previous prime is 2118871. The next prime is 2118889. The reversal of 2118877 is 7788112.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2114116 + 4761 = 1454^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 2118877 - 2¹⁵ = 2086109 is a prime.

It is a super-2 number, since 2×2118877² = 8979279482258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2118871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059438 + 1059439.

It is an arithmetic number, because the mean of its divisors is an integer number (1059439).

2^2118877 is an apocalyptic number.

It is an amenable number.

2118877 is a deficient number, since it is larger than the sum of its proper divisors (1).

2118877 is an equidigital number, since it uses as much as digits as its factorization.

2118877 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6272, while the sum is 34.

The square root of 2118877 is about 1455.6362869893. The cubic root of 2118877 is about 128.4404787248.

The spelling of 2118877 in words is "two million, one hundred eighteen thousand, eight hundred seventy-seven".