1043453664 has 216 divisors, whose sum is σ = 3385451160. Its totient is φ = 315912960.

The previous prime is 1043453657. The next prime is 1043453681. The reversal of 1043453664 is 4663543401.

It is a tau number, because it is divible by the number of its divisors (216).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 940342 + ... + 941450.

It is an arithmetic number, because the mean of its divisors is an integer number (15673385).

Almost surely, 2^1043453664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1043453664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1692725580).

1043453664 is an abundant number, since it is smaller than the sum of its proper divisors (2341997496).

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

1043453664 is a wasteful number, since it uses less digits than its factorization.

1043453664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156 (or 1125 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 36.

The square root of 1043453664 is about 32302.5333991004. The cubic root of 1043453664 is about 1014.2796749643.

The spelling of 1043453664 in words is "one billion, forty-three million, four hundred fifty-three thousand, six hundred sixty-four".