1487989000 has 32 divisors (see below), whose sum is σ = 3481896600. Its totient is φ = 595195200.

The previous prime is 1487988977. The next prime is 1487989033. The reversal of 1487989000 is 9897841.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 111133764 + 1376855236 = 10542^2 + 37106^2 .

It is a super-2 number, since 2×1487989000² = 4428222528242000000, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 742995 + ... + 744994.

Almost surely, 2^1487989000 is an apocalyptic number.

1487989000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1487989000 is an abundant number, since it is smaller than the sum of its proper divisors (1993907600).

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

1487989000 is a wasteful number, since it uses less digits than its factorization.

1487989000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1488010 (or 1487996 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 1487989000 is about 38574.4604628503. The cubic root of 1487989000 is about 1141.6506814558.

The spelling of 1487989000 in words is "one billion, four hundred eighty-seven million, nine hundred eighty-nine thousand".