1489318740 has 432 divisors, whose sum is σ = 5855915520. Its totient is φ = 303367680.

The previous prime is 1489318739. The next prime is 1489318741. The reversal of 1489318740 is 478139841.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1489318739) and next prime (1489318741).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1489318741) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3554251 + ... + 3554669.

It is an arithmetic number, because the mean of its divisors is an integer number (13555360).

Almost surely, 2^1489318740 is an apocalyptic number.

1489318740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1489318740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2927957760).

1489318740 is an abundant number, since it is smaller than the sum of its proper divisors (4366596780).

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

1489318740 is a wasteful number, since it uses less digits than its factorization.

1489318740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492 (or 480 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 1489318740 is about 38591.6926293730. The cubic root of 1489318740 is about 1141.9906585626.

It can be divided in two parts, 14893 and 18740, that added together give a palindrome (33633).

The spelling of 1489318740 in words is "one billion, four hundred eighty-nine million, three hundred eighteen thousand, seven hundred forty".