1488442721 has 16 divisors (see below), whose sum is σ = 1583617728. Its totient is φ = 1397088000.

The previous prime is 1488442643. The next prime is 1488442783. The reversal of 1488442721 is 1272448841.

It is a cyclic number.

It is not a de Polignac number, because 1488442721 - 2¹⁰ = 1488441697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1488442321) 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 15 ways as a sum of consecutive naturals, for example, 111821 + ... + 124421.

It is an arithmetic number, because the mean of its divisors is an integer number (98976108).

Almost surely, 2^1488442721 is an apocalyptic number.

It is an amenable number.

1488442721 is a deficient number, since it is larger than the sum of its proper divisors (95175007).

1488442721 is a wasteful number, since it uses less digits than its factorization.

1488442721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12752.

The product of its digits is 114688, while the sum is 41.

The square root of 1488442721 is about 38580.3411208351. The cubic root of 1488442721 is about 1141.7667079069.

The spelling of 1488442721 in words is "one billion, four hundred eighty-eight million, four hundred forty-two thousand, seven hundred twenty-one".