3646440052 has 6 divisors (see below), whose sum is σ = 6381270098. Its totient is φ = 1823220024.

The previous prime is 3646440037. The next prime is 3646440073. The reversal of 3646440052 is 2500446463.

It can be written as a sum of positive squares in only one way, i.e., 3519336976 + 127103076 = 59324^2 + 11274^2 .

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, 455805003 + ... + 455805010.

Almost surely, 2^3646440052 is an apocalyptic number.

It is an amenable number.

3646440052 is a deficient number, since it is larger than the sum of its proper divisors (2734830046).

3646440052 is a wasteful number, since it uses less digits than its factorization.

3646440052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 911610017 (or 911610015 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 3646440052 is about 60385.7603413255. The cubic root of 3646440052 is about 1539.1809964590.

The spelling of 3646440052 in words is "three billion, six hundred forty-six million, four hundred forty thousand, fifty-two".