1489736945 has 8 divisors (see below), whose sum is σ = 1892842344. Its totient is φ = 1121684224.

The previous prime is 1489736939. The next prime is 1489736947. The reversal of 1489736945 is 5496379841.

It can be written as a sum of positive squares in 4 ways, for example, as 837292096 + 652444849 = 28936^2 + 25543^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1489736945 - 2⁴ = 1489736929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1489736947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8763074 + ... + 8763243.

It is an arithmetic number, because the mean of its divisors is an integer number (236605293).

Almost surely, 2^1489736945 is an apocalyptic number.

It is an amenable number.

1489736945 is a deficient number, since it is larger than the sum of its proper divisors (403105399).

1489736945 is a wasteful number, since it uses less digits than its factorization.

1489736945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17526339.

The product of its digits is 6531840, while the sum is 56.

The square root of 1489736945 is about 38597.1105783840. The cubic root of 1489736945 is about 1142.0975399832.

The spelling of 1489736945 in words is "one billion, four hundred eighty-nine million, seven hundred thirty-six thousand, nine hundred forty-five".