1080644305 has 24 divisors (see below), whose sum is σ = 1465276608. Its totient is φ = 763304256.

The previous prime is 1080644303. The next prime is 1080644317. The reversal of 1080644305 is 5034460801.

It is a happy number.

It is not a de Polignac number, because 1080644305 - 2¹ = 1080644303 is a prime.

It is a super-2 number, since 2×1080644305² = 2335584227857866050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1080644303) 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, 8367 + ... + 47236.

It is an arithmetic number, because the mean of its divisors is an integer number (61053192).

Almost surely, 2^1080644305 is an apocalyptic number.

It is an amenable number.

1080644305 is a deficient number, since it is larger than the sum of its proper divisors (384632303).

1080644305 is a wasteful number, since it uses less digits than its factorization.

1080644305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55657 (or 55644 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 1080644305 is about 32873.1547771126. The cubic root of 1080644305 is about 1026.1895544935.

The spelling of 1080644305 in words is "one billion, eighty million, six hundred forty-four thousand, three hundred five".