1489720165 has 16 divisors (see below), whose sum is σ = 1830628800. Its totient is φ = 1163175552.

The previous prime is 1489720163. The next prime is 1489720171. The reversal of 1489720165 is 5610279841.

It is a cyclic number.

It is not a de Polignac number, because 1489720165 - 2¹ = 1489720163 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489720163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544521 + ... + 547249.

It is an arithmetic number, because the mean of its divisors is an integer number (114414300).

Almost surely, 2^1489720165 is an apocalyptic number.

It is an amenable number.

1489720165 is a deficient number, since it is larger than the sum of its proper divisors (340908635).

1489720165 is a wasteful number, since it uses less digits than its factorization.

1489720165 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5316.

The product of its (nonzero) digits is 120960, while the sum is 43.

The square root of 1489720165 is about 38596.8932039873. The cubic root of 1489720165 is about 1142.0932518730.

The spelling of 1489720165 in words is "one billion, four hundred eighty-nine million, seven hundred twenty thousand, one hundred sixty-five".