4201945812 has 36 divisors (see below), whose sum is σ = 10638968340. Its totient is φ = 1398356352.

The previous prime is 4201945771. The next prime is 4201945819. The reversal of 4201945812 is 2185491024.

It can be written as a sum of positive squares in 2 ways, for example, as 1410302916 + 2791642896 = 37554^2 + 52836^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4201945819) 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, 73137 + ... + 117272.

Almost surely, 2^4201945812 is an apocalyptic number.

It is an amenable number.

4201945812 is an abundant number, since it is smaller than the sum of its proper divisors (6437022528).

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

4201945812 is a wasteful number, since it uses less digits than its factorization.

4201945812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191032 (or 191027 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 4201945812 is about 64822.4175112283. The cubic root of 4201945812 is about 1613.6777685741.

The spelling of 4201945812 in words is "four billion, two hundred one million, nine hundred forty-five thousand, eight hundred twelve".