2117187057 has 4 divisors (see below), whose sum is σ = 2822916080. Its totient is φ = 1411458036.

The previous prime is 2117187049. The next prime is 2117187073. The reversal of 2117187057 is 7507817112.

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 not a de Polignac number, because 2117187057 - 2³ = 2117187049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2117187857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352864507 + ... + 352864512.

It is an arithmetic number, because the mean of its divisors is an integer number (705729020).

Almost surely, 2^2117187057 is an apocalyptic number.

It is an amenable number.

2117187057 is a deficient number, since it is larger than the sum of its proper divisors (705729023).

2117187057 is an equidigital number, since it uses as much as digits as its factorization.

2117187057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705729022.

The product of its (nonzero) digits is 27440, while the sum is 39.

The square root of 2117187057 is about 46012.9009843978. The cubic root of 2117187057 is about 1284.0632308173.

The spelling of 2117187057 in words is "two billion, one hundred seventeen million, one hundred eighty-seven thousand, fifty-seven".