1489921975 has 12 divisors (see below), whose sum is σ = 1847981920. Its totient is φ = 1191628800.

The previous prime is 1489921933. The next prime is 1489921997. The reversal of 1489921975 is 5791299841.

It is not a de Polignac number, because 1489921975 - 2⁷ = 1489921847 is a prime.

It is a hoax number, since the sum of its digits (55) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188146 + ... + 195904.

Almost surely, 2^1489921975 is an apocalyptic number.

1489921975 is a deficient number, since it is larger than the sum of its proper divisors (358059945).

1489921975 is an equidigital number, since it uses as much as digits as its factorization.

1489921975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15450 (or 15445 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 55.

The square root of 1489921975 is about 38599.5074450439. The cubic root of 1489921975 is about 1142.1448220577.

The spelling of 1489921975 in words is "one billion, four hundred eighty-nine million, nine hundred twenty-one thousand, nine hundred seventy-five".