3945649419800 has 48 divisors (see below), whose sum is σ = 10007601715800. Its totient is φ = 1434781606400.

The previous prime is 3945649419793. The next prime is 3945649419809. The reversal of 3945649419800 is 89149465493.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3945649419809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 896736305 + ... + 896740704.

Almost surely, 2^{3945649419800} is an apocalyptic number.

It is an amenable number.

3945649419800 is an abundant number, since it is smaller than the sum of its proper divisors (6061952296000).

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

3945649419800 is a wasteful number, since it uses less digits than its factorization.

3945649419800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1793477036 (or 1793477027 counting only the distinct ones).

The product of its (nonzero) digits is 33592320, while the sum is 62.

The spelling of 3945649419800 in words is "three trillion, nine hundred forty-five billion, six hundred forty-nine million, four hundred nineteen thousand, eight hundred".