1485757440 has 264 divisors, whose sum is σ = 5422257360. Its totient is φ = 375128064.

The previous prime is 1485757397. The next prime is 1485757447. The reversal of 1485757440 is 447575841.

1485757440 is a `hidden beast` number, since 1 + 4 + 8 + 575 + 74 + 4 + 0 = 666.

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 (1485757447) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 874672 + ... + 876368.

Almost surely, 2^1485757440 is an apocalyptic number.

1485757440 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 1485757440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2711128680).

1485757440 is an abundant number, since it is smaller than the sum of its proper divisors (3936499920).

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

1485757440 is a wasteful number, since it uses less digits than its factorization.

1485757440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1747 (or 1726 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 45.

The square root of 1485757440 is about 38545.5242537963. The cubic root of 1485757440 is about 1141.0796788820.

The spelling of 1485757440 in words is "one billion, four hundred eighty-five million, seven hundred fifty-seven thousand, four hundred forty".