2087901117 has 20 divisors (see below), whose sum is σ = 3132377820. Its totient is φ = 1385947584.

The previous prime is 2087901103. The next prime is 2087901131. The reversal of 2087901117 is 7111097802.

It is an interprime number because it is at equal distance from previous prime (2087901103) and next prime (2087901131).

It can be written as a sum of positive squares in 2 ways, for example, as 333464121 + 1754436996 = 18261^2 + 41886^2 .

It is not a de Polignac number, because 2087901117 - 2⁷ = 2087900989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2087900117) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 36442 + ... + 74187.

It is an arithmetic number, because the mean of its divisors is an integer number (156618891).

Almost surely, 2^2087901117 is an apocalyptic number.

2087901117 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

2087901117 is a deficient number, since it is larger than the sum of its proper divisors (1044476703).

2087901117 is a wasteful number, since it uses less digits than its factorization.

2087901117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110874 (or 110865 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 36.

The square root of 2087901117 is about 45693.5566245395. The cubic root of 2087901117 is about 1278.1151288203.

Adding to 2087901117 its reverse (7111097802), we get a palindrome (9198998919).

The spelling of 2087901117 in words is "two billion, eighty-seven million, nine hundred one thousand, one hundred seventeen".