4193381961 has 8 divisors (see below), whose sum is σ = 6212417760. Its totient is φ = 2795587956.

The previous prime is 4193381953. The next prime is 4193381963. The reversal of 4193381961 is 1691833914.

4193381961 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 4193381961 - 2³ = 4193381953 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4193381963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77655195 + ... + 77655248.

It is an arithmetic number, because the mean of its divisors is an integer number (776552220).

Almost surely, 2^4193381961 is an apocalyptic number.

It is an amenable number.

4193381961 is a deficient number, since it is larger than the sum of its proper divisors (2019035799).

4193381961 is a wasteful number, since it uses less digits than its factorization.

4193381961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155310452 (or 155310446 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 4193381961 is about 64756.3275749946. The cubic root of 4193381961 is about 1612.5807613417.

The spelling of 4193381961 in words is "four billion, one hundred ninety-three million, three hundred eighty-one thousand, nine hundred sixty-one".