1489368881 has 32 divisors (see below), whose sum is σ = 2053809408. Its totient is φ = 1042295040.

The previous prime is 1489368857. The next prime is 1489368893. The reversal of 1489368881 is 1888639841.

It is a cyclic number.

It is not a de Polignac number, because 1489368881 - 2³⁰ = 415627057 is a prime.

It is a super-2 number, since 2×1489368881² = 4436439327382384322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1489364881) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 16931 + ... + 57143.

It is an arithmetic number, because the mean of its divisors is an integer number (64181544).

Almost surely, 2^1489368881 is an apocalyptic number.

1489368881 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1489368881 is a deficient number, since it is larger than the sum of its proper divisors (564440527).

1489368881 is a wasteful number, since it uses less digits than its factorization.

1489368881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40281.

The product of its digits is 2654208, while the sum is 56.

The square root of 1489368881 is about 38592.3422585362. The cubic root of 1489368881 is about 1142.0034742457.

The spelling of 1489368881 in words is "one billion, four hundred eighty-nine million, three hundred sixty-eight thousand, eight hundred eighty-one".