1064450040 has 128 divisors (see below), whose sum is σ = 3303720000. Its totient is φ = 274157568.

The previous prime is 1064450033. The next prime is 1064450047. The reversal of 1064450040 is 400544601.

It is an interprime number because it is at equal distance from previous prime (1064450033) and next prime (1064450047).

It is a super-4 number, since 4×1064450040⁴ (a number of 37 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1064450047) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 660756 + ... + 662364.

Almost surely, 2^1064450040 is an apocalyptic number.

1064450040 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 1064450040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1651860000).

1064450040 is an abundant number, since it is smaller than the sum of its proper divisors (2239269960).

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

1064450040 is a wasteful number, since it uses less digits than its factorization.

1064450040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1809 (or 1805 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1064450040 is about 32625.9105620058. The cubic root of 1064450040 is about 1021.0376598950.

Adding to 1064450040 its reverse (400544601), we get a palindrome (1464994641).

The spelling of 1064450040 in words is "one billion, sixty-four million, four hundred fifty thousand, forty".