3648857445 has 12 divisors (see below), whose sum is σ = 6324686316. Its totient is φ = 1946057280.

The previous prime is 3648857437. The next prime is 3648857461. The reversal of 3648857445 is 5447588463.

It is a happy number.

3648857445 is a `hidden beast` number, since 3 + 64 + 8 + 8 + 574 + 4 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 954624609 + 2694232836 = 30897^2 + 51906^2 .

It is not a de Polignac number, because 3648857445 - 2³ = 3648857437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3648857391 and 3648857400.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40542816 + ... + 40542905.

It is an arithmetic number, because the mean of its divisors is an integer number (527057193).

Almost surely, 2^3648857445 is an apocalyptic number.

It is an amenable number.

3648857445 is a deficient number, since it is larger than the sum of its proper divisors (2675828871).

3648857445 is a wasteful number, since it uses less digits than its factorization.

3648857445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81085732 (or 81085729 counting only the distinct ones).

The product of its digits is 12902400, while the sum is 54.

The square root of 3648857445 is about 60405.7732754080. The cubic root of 3648857445 is about 1539.5210526403.

The spelling of 3648857445 in words is "three billion, six hundred forty-eight million, eight hundred fifty-seven thousand, four hundred forty-five".