1871364487 has 4 divisors (see below), whose sum is σ = 1879756480. Its totient is φ = 1862972496.

The previous prime is 1871364421. The next prime is 1871364491. The reversal of 1871364487 is 7844631781.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1871364487 - 2²³ = 1862975879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1871364487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1871362487) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4195662 + ... + 4196107.

It is an arithmetic number, because the mean of its divisors is an integer number (469939120).

Almost surely, 2^1871364487 is an apocalyptic number.

1871364487 is a deficient number, since it is larger than the sum of its proper divisors (8391993).

1871364487 is an equidigital number, since it uses as much as digits as its factorization.

1871364487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8391992.

The product of its digits is 903168, while the sum is 49.

The square root of 1871364487 is about 43259.2705324535. The cubic root of 1871364487 is about 1232.3085485325.

The spelling of 1871364487 in words is "one billion, eight hundred seventy-one million, three hundred sixty-four thousand, four hundred eighty-seven".