2140887817 has 8 divisors (see below), whose sum is σ = 2234447424. Its totient is φ = 2047368048.

The previous prime is 2140887811. The next prime is 2140887823. The reversal of 2140887817 is 7187880412.

It is an interprime number because it is at equal distance from previous prime (2140887811) and next prime (2140887823).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2140887817 - 2²³ = 2132499209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2140887811) 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 7 ways as a sum of consecutive naturals, for example, 166843 + ... + 179215.

It is an arithmetic number, because the mean of its divisors is an integer number (279305928).

Almost surely, 2^2140887817 is an apocalyptic number.

It is an amenable number.

2140887817 is a deficient number, since it is larger than the sum of its proper divisors (93559607).

2140887817 is a wasteful number, since it uses less digits than its factorization.

2140887817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19919.

The product of its (nonzero) digits is 200704, while the sum is 46.

The square root of 2140887817 is about 46269.7289488495. The cubic root of 2140887817 is about 1288.8369255576.

The spelling of 2140887817 in words is "two billion, one hundred forty million, eight hundred eighty-seven thousand, eight hundred seventeen".