506738381 has 8 divisors (see below), whose sum is σ = 510706560. Its totient is φ = 502779888.

The previous prime is 506738377. The next prime is 506738387. The reversal of 506738381 is 183837605.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 506738381 - 2² = 506738377 is a prime.

It is a super-2 number, since 2×506738381² = 513567573557002322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (506738387) 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, 129800 + ... + 133646.

It is an arithmetic number, because the mean of its divisors is an integer number (63838320).

Almost surely, 2^506738381 is an apocalyptic number.

It is an amenable number.

506738381 is a deficient number, since it is larger than the sum of its proper divisors (3968179).

506738381 is a wasteful number, since it uses less digits than its factorization.

506738381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4843.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 506738381 is about 22510.8502949133. The cubic root of 506738381 is about 797.2501320505.

The spelling of 506738381 in words is "five hundred six million, seven hundred thirty-eight thousand, three hundred eighty-one".