1987227867 has 8 divisors (see below), whose sum is σ = 2679408720. Its totient is φ = 1309932800.

The previous prime is 1987227833. The next prime is 1987227943. The reversal of 1987227867 is 7687227891.

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 1987227867 - 2⁸ = 1987227611 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1987227967) 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, 3721134 + ... + 3721667.

It is an arithmetic number, because the mean of its divisors is an integer number (334926090).

Almost surely, 2^1987227867 is an apocalyptic number.

1987227867 is a deficient number, since it is larger than the sum of its proper divisors (692180853).

1987227867 is an equidigital number, since it uses as much as digits as its factorization.

1987227867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7442893.

The product of its digits is 4741632, while the sum is 57.

The square root of 1987227867 is about 44578.3340536633. The cubic root of 1987227867 is about 1257.2333405830.

The spelling of 1987227867 in words is "one billion, nine hundred eighty-seven million, two hundred twenty-seven thousand, eight hundred sixty-seven".