1987885260 has 96 divisors (see below), whose sum is σ = 6510067200. Its totient is φ = 502200000.

The previous prime is 1987885217. The next prime is 1987885309. The reversal of 1987885260 is 625887891.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 1987885197 and 1987885206.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 86616 + ... + 107135.

It is an arithmetic number, because the mean of its divisors is an integer number (67813200).

Almost surely, 2^1987885260 is an apocalyptic number.

1987885260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1987885260 is an abundant number, since it is smaller than the sum of its proper divisors (4522181940).

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

1987885260 is a wasteful number, since it uses less digits than its factorization.

1987885260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 193788 (or 193780 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 54.

The square root of 1987885260 is about 44585.7069025489. The cubic root of 1987885260 is about 1257.3719600288.

The spelling of 1987885260 in words is "one billion, nine hundred eighty-seven million, eight hundred eighty-five thousand, two hundred sixty".