2106835557 has 4 divisors (see below), whose sum is σ = 2809114080. Its totient is φ = 1404557036.

The previous prime is 2106835541. The next prime is 2106835561. The reversal of 2106835557 is 7555386012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2106835557 - 2⁴ = 2106835541 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106835597) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 351139257 + ... + 351139262.

It is an arithmetic number, because the mean of its divisors is an integer number (702278520).

Almost surely, 2^2106835557 is an apocalyptic number.

It is an amenable number.

2106835557 is a deficient number, since it is larger than the sum of its proper divisors (702278523).

2106835557 is an equidigital number, since it uses as much as digits as its factorization.

2106835557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 702278522.

The product of its (nonzero) digits is 252000, while the sum is 42.

The square root of 2106835557 is about 45900.2783978485. The cubic root of 2106835557 is about 1281.9671001330.

The spelling of 2106835557 in words is "two billion, one hundred six million, eight hundred thirty-five thousand, five hundred fifty-seven".