1489112391 has 16 divisors (see below), whose sum is σ = 2231179776. Its totient is φ = 876533856.

The previous prime is 1489112381. The next prime is 1489112393. The reversal of 1489112391 is 1932119841.

It is not a de Polignac number, because 1489112391 - 2¹⁰ = 1489111367 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489112393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 829155 + ... + 830948.

It is an arithmetic number, because the mean of its divisors is an integer number (139448736).

Almost surely, 2^1489112391 is an apocalyptic number.

1489112391 is a deficient number, since it is larger than the sum of its proper divisors (742067385).

1489112391 is a wasteful number, since it uses less digits than its factorization.

1489112391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1660142.

The product of its digits is 15552, while the sum is 39.

The square root of 1489112391 is about 38589.0190468739. The cubic root of 1489112391 is about 1141.9379141975.

The spelling of 1489112391 in words is "one billion, four hundred eighty-nine million, one hundred twelve thousand, three hundred ninety-one".