1987111014 has 24 divisors (see below), whose sum is σ = 4623075288. Its totient is φ = 567745920.

The previous prime is 1987110971. The next prime is 1987111019. The reversal of 1987111014 is 4101117891.

It is a super-2 number, since 2×1987111014² = 7897220363920216392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1987111019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3379147 + ... + 3379734.

It is an arithmetic number, because the mean of its divisors is an integer number (192628137).

Almost surely, 2^1987111014 is an apocalyptic number.

1987111014 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1987111014 is an abundant number, since it is smaller than the sum of its proper divisors (2635964274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1987111014 is a wasteful number, since it uses less digits than its factorization.

1987111014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6758900 (or 6758893 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 33.

The square root of 1987111014 is about 44577.0233864936. The cubic root of 1987111014 is about 1257.2086974827.

The spelling of 1987111014 in words is "one billion, nine hundred eighty-seven million, one hundred eleven thousand, fourteen".