4381981907 has 4 divisors (see below), whose sum is σ = 4382396736. Its totient is φ = 4381567080.

The previous prime is 4381981871. The next prime is 4381981937. The reversal of 4381981907 is 7091891834.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4381981907 - 2⁸ = 4381981651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4381981937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191144 + ... + 212837.

It is an arithmetic number, because the mean of its divisors is an integer number (1095599184).

Almost surely, 2^4381981907 is an apocalyptic number.

4381981907 is a deficient number, since it is larger than the sum of its proper divisors (414829).

4381981907 is a wasteful number, since it uses less digits than its factorization.

4381981907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414828.

The product of its (nonzero) digits is 435456, while the sum is 50.

The square root of 4381981907 is about 66196.5399926612. The cubic root of 4381981907 is about 1636.4027224312.

The spelling of 4381981907 in words is "four billion, three hundred eighty-one million, nine hundred eighty-one thousand, nine hundred seven".