1035634644 has 54 divisors (see below), whose sum is σ = 2877488250. Its totient is φ = 313827360.

The previous prime is 1035634627. The next prime is 1035634669. The reversal of 1035634644 is 4464365301.

1035634644 is a `hidden beast` number, since 1 + 0 + 3 + 5 + 6 + 3 + 4 + 644 = 666.

It can be written as a sum of positive squares in only one way, i.e., 909746244 + 125888400 = 30162^2 + 11220^2 .

It is a super-3 number, since 3×1035634644³ (a number of 28 digits) contains 333 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 = 1035634599 and 1035634608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 114519 + ... + 123230.

Almost surely, 2^1035634644 is an apocalyptic number.

It is an amenable number.

1035634644 is an abundant number, since it is smaller than the sum of its proper divisors (1841853606).

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

1035634644 is a wasteful number, since it uses less digits than its factorization.

1035634644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237781 (or 237765 counting only the distinct ones).

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

The square root of 1035634644 is about 32181.2778490849. The cubic root of 1035634644 is about 1011.7398512153.

Adding to 1035634644 its reverse (4464365301), we get a palindrome (5499999945).

The spelling of 1035634644 in words is "one billion, thirty-five million, six hundred thirty-four thousand, six hundred forty-four".