1687151420 has 48 divisors (see below), whose sum is σ = 3627372000. Its totient is φ = 658955520.

The previous prime is 1687151393. The next prime is 1687151437. The reversal of 1687151420 is 241517861.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164606 + ... + 174554.

It is an arithmetic number, because the mean of its divisors is an integer number (75570250).

Almost surely, 2^1687151420 is an apocalyptic number.

1687151420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1687151420 is an abundant number, since it is smaller than the sum of its proper divisors (1940220580).

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

1687151420 is a wasteful number, since it uses less digits than its factorization.

1687151420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10158 (or 10156 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 35.

The square root of 1687151420 is about 41074.9488131148. The cubic root of 1687151420 is about 1190.4688075890.

The spelling of 1687151420 in words is "one billion, six hundred eighty-seven million, one hundred fifty-one thousand, four hundred twenty".