1489378863 has 48 divisors (see below), whose sum is σ = 2352814080. Its totient is φ = 835458624.

The previous prime is 1489378841. The next prime is 1489378921. The reversal of 1489378863 is 3688739841.

1489378863 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1489378863 - 2¹⁸ = 1489116719 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489378063) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3216570 + ... + 3217032.

It is an arithmetic number, because the mean of its divisors is an integer number (49016960).

Almost surely, 2^1489378863 is an apocalyptic number.

1489378863 is a deficient number, since it is larger than the sum of its proper divisors (863435217).

1489378863 is a wasteful number, since it uses less digits than its factorization.

1489378863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 829 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 57.

The square root of 1489378863 is about 38592.4715844943. The cubic root of 1489378863 is about 1142.0060255396.

The spelling of 1489378863 in words is "one billion, four hundred eighty-nine million, three hundred seventy-eight thousand, eight hundred sixty-three".