1487485638 has 24 divisors (see below), whose sum is σ = 3223883208. Its totient is φ = 495675072.

The previous prime is 1487485633. The next prime is 1487485663. The reversal of 1487485638 is 8365847841.

1487485638 is a `hidden beast` number, since 1 + 4 + 8 + 74 + 8 + 563 + 8 = 666.

It is a super-2 number, since 2×1487485638² = 4425227046512534088, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1487485631) 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, 57381 + ... + 79167.

It is an arithmetic number, because the mean of its divisors is an integer number (134328467).

Almost surely, 2^1487485638 is an apocalyptic number.

1487485638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1487485638 is an abundant number, since it is smaller than the sum of its proper divisors (1736397570).

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

1487485638 is a wasteful number, since it uses less digits than its factorization.

1487485638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25588 (or 25585 counting only the distinct ones).

The product of its digits is 5160960, while the sum is 54.

The square root of 1487485638 is about 38567.9353608668. The cubic root of 1487485638 is about 1141.5219331066.

The spelling of 1487485638 in words is "one billion, four hundred eighty-seven million, four hundred eighty-five thousand, six hundred thirty-eight".