381563941 has 6 divisors (see below), whose sum is σ = 419405126. Its totient is φ = 346876200.

The previous prime is 381563939. The next prime is 381563957. The reversal of 381563941 is 149365183.

It can be written as a sum of positive squares in only one way, i.e., 238857025 + 142706916 = 15455^2 + 11946^2 .

It is not a de Polignac number, because 381563941 - 2¹ = 381563939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381563894 and 381563903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381563911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1576590 + ... + 1576831.

Almost surely, 2^381563941 is an apocalyptic number.

It is an amenable number.

381563941 is a deficient number, since it is larger than the sum of its proper divisors (37841185).

381563941 is a wasteful number, since it uses less digits than its factorization.

381563941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3153443 (or 3153432 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 381563941 is about 19533.6617406978. The cubic root of 381563941 is about 725.3079570031.

The spelling of 381563941 in words is "three hundred eighty-one million, five hundred sixty-three thousand, nine hundred forty-one".