3955437813 has 16 divisors (see below), whose sum is σ = 5409129600. Its totient is φ = 2569509120.

The previous prime is 3955437809. The next prime is 3955437869. The reversal of 3955437813 is 3187345593.

It is not a de Polignac number, because 3955437813 - 2² = 3955437809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3955432813) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84033 + ... + 122361.

It is an arithmetic number, because the mean of its divisors is an integer number (338070600).

Almost surely, 2^3955437813 is an apocalyptic number.

It is an amenable number.

3955437813 is a deficient number, since it is larger than the sum of its proper divisors (1453691787).

3955437813 is a wasteful number, since it uses less digits than its factorization.

3955437813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39212.

The product of its digits is 1360800, while the sum is 48.

The square root of 3955437813 is about 62892.2714886336. The cubic root of 3955437813 is about 1581.4841863504.

The spelling of 3955437813 in words is "three billion, nine hundred fifty-five million, four hundred thirty-seven thousand, eight hundred thirteen".