1489720164 has 12 divisors (see below), whose sum is σ = 3476013744. Its totient is φ = 496573384.

The previous prime is 1489720163. The next prime is 1489720171. The reversal of 1489720164 is 4610279841.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 62071662 + ... + 62071685.

It is an arithmetic number, because the mean of its divisors is an integer number (289667812).

Almost surely, 2^1489720164 is an apocalyptic number.

It is an amenable number.

1489720164 is an abundant number, since it is smaller than the sum of its proper divisors (1986293580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1489720164 is a wasteful number, since it uses less digits than its factorization.

1489720164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124143354 (or 124143352 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 1489720164 is about 38596.8931910329. The cubic root of 1489720164 is about 1142.0932516174.

The spelling of 1489720164 in words is "one billion, four hundred eighty-nine million, seven hundred twenty thousand, one hundred sixty-four".