1589889540 has 24 divisors (see below), whose sum is σ = 4451690880. Its totient is φ = 423970528.

The previous prime is 1589889527. The next prime is 1589889541. The reversal of 1589889540 is 459889851.

It is not an unprimeable number, because it can be changed into a prime (1589889541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13249020 + ... + 13249139.

It is an arithmetic number, because the mean of its divisors is an integer number (185487120).

Almost surely, 2^1589889540 is an apocalyptic number.

1589889540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1589889540 is an abundant number, since it is smaller than the sum of its proper divisors (2861801340).

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

1589889540 is a wasteful number, since it uses less digits than its factorization.

1589889540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26498171 (or 26498169 counting only the distinct ones).

The product of its (nonzero) digits is 4147200, while the sum is 57.

The square root of 1589889540 is about 39873.4189655214. The cubic root of 1589889540 is about 1167.1382907719.

The spelling of 1589889540 in words is "one billion, five hundred eighty-nine million, eight hundred eighty-nine thousand, five hundred forty".