381563733 has 4 divisors (see below), whose sum is σ = 508751648. Its totient is φ = 254375820.

The previous prime is 381563713. The next prime is 381563761. The reversal of 381563733 is 337365183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 337365183 = 3 ⋅112455061.

It is not a de Polignac number, because 381563733 - 2¹⁶ = 381498197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381563691 and 381563700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381563713) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63593953 + ... + 63593958.

It is an arithmetic number, because the mean of its divisors is an integer number (127187912).

Almost surely, 2^381563733 is an apocalyptic number.

It is an amenable number.

381563733 is a deficient number, since it is larger than the sum of its proper divisors (127187915).

381563733 is a wasteful number, since it uses less digits than its factorization.

381563733 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127187914.

The product of its digits is 136080, while the sum is 39.

The square root of 381563733 is about 19533.6564165545. The cubic root of 381563733 is about 725.3078252086.

The spelling of 381563733 in words is "three hundred eighty-one million, five hundred sixty-three thousand, seven hundred thirty-three".