3634721044 has 6 divisors (see below), whose sum is σ = 6360761834. Its totient is φ = 1817360520.

The previous prime is 3634721029. The next prime is 3634721063. The reversal of 3634721044 is 4401274363.

It can be written as a sum of positive squares in only one way, i.e., 1847968144 + 1786752900 = 42988^2 + 42270^2 .

It is a super-2 number, since 2×3634721044² = 26422394135392899872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 454340127 + ... + 454340134.

Almost surely, 2^3634721044 is an apocalyptic number.

It is an amenable number.

3634721044 is a deficient number, since it is larger than the sum of its proper divisors (2726040790).

3634721044 is a wasteful number, since it uses less digits than its factorization.

3634721044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 908680265 (or 908680263 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 34.

The square root of 3634721044 is about 60288.6477207774. The cubic root of 3634721044 is about 1537.5303424862.

The spelling of 3634721044 in words is "three billion, six hundred thirty-four million, seven hundred twenty-one thousand, forty-four".