1054813644 has 24 divisors (see below), whose sum is σ = 2734702320. Its totient is φ = 351604512.

The previous prime is 1054813631. The next prime is 1054813663. The reversal of 1054813644 is 4463184501.

1054813644 is a `hidden beast` number, since 1 + 0 + 5 + 4 + 8 + 1 + 3 + 644 = 666.

It is a super-2 number, since 2×1054813644² = 2225263647137117472, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 1054813599 and 1054813608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4883289 + ... + 4883504.

It is an arithmetic number, because the mean of its divisors is an integer number (113945930).

Almost surely, 2^1054813644 is an apocalyptic number.

It is an amenable number.

1054813644 is an abundant number, since it is smaller than the sum of its proper divisors (1679888676).

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

1054813644 is a wasteful number, since it uses less digits than its factorization.

1054813644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9766806 (or 9766798 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 1054813644 is about 32477.8946977787. The cubic root of 1054813644 is about 1017.9471862344.

The spelling of 1054813644 in words is "one billion, fifty-four million, eight hundred thirteen thousand, six hundred forty-four".