1859797871087 has 8 divisors (see below), whose sum is σ = 2002879556496. Its totient is φ = 1716719087232.

The previous prime is 1859797871047. The next prime is 1859797871089. The reversal of 1859797871087 is 7801787979581.

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 1859797871087 - 2¹⁸ = 1859797608943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1859797870999 and 1859797871017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1859797871089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711248 + ... + 2055594.

It is an arithmetic number, because the mean of its divisors is an integer number (250359944562).

Almost surely, 2^{1859797871087} is an apocalyptic number.

1859797871087 is a deficient number, since it is larger than the sum of its proper divisors (143081685409).

1859797871087 is a wasteful number, since it uses less digits than its factorization.

1859797871087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1450777.

The product of its (nonzero) digits is 497871360, while the sum is 77.

The spelling of 1859797871087 in words is "one trillion, eight hundred fifty-nine billion, seven hundred ninety-seven million, eight hundred seventy-one thousand, eighty-seven".