1489720065 has 16 divisors (see below), whose sum is σ = 2384232000. Its totient is φ = 794290752.

The previous prime is 1489720049. The next prime is 1489720069. The reversal of 1489720065 is 5600279841.

It is not a de Polignac number, because 1489720065 - 2⁴ = 1489720049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1489719999 and 1489720026.

It is not an unprimeable number, because it can be changed into a prime (1489720069) 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, 49371 + ... + 73599.

It is an arithmetic number, because the mean of its divisors is an integer number (149014500).

Almost surely, 2^1489720065 is an apocalyptic number.

1489720065 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1489720065 is a deficient number, since it is larger than the sum of its proper divisors (894511935).

1489720065 is a wasteful number, since it uses less digits than its factorization.

1489720065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28336.

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 1489720065 is about 38596.8919085462. The cubic root of 1489720065 is about 1142.0932263180.

The spelling of 1489720065 in words is "one billion, four hundred eighty-nine million, seven hundred twenty thousand, sixty-five".