381630441 has 4 divisors (see below), whose sum is σ = 508840592. Its totient is φ = 254420292.

The previous prime is 381630437. The next prime is 381630463. The reversal of 381630441 is 144036183.

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.

It is not a de Polignac number, because 381630441 - 2² = 381630437 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381630399 and 381630408.

It is not an unprimeable number, because it can be changed into a prime (381630481) 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, 63605071 + ... + 63605076.

It is an arithmetic number, because the mean of its divisors is an integer number (127210148).

Almost surely, 2^381630441 is an apocalyptic number.

It is an amenable number.

381630441 is a deficient number, since it is larger than the sum of its proper divisors (127210151).

381630441 is a wasteful number, since it uses less digits than its factorization.

381630441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127210150.

The product of its (nonzero) digits is 6912, while the sum is 30.

The square root of 381630441 is about 19535.3638563504. The cubic root of 381630441 is about 725.3500907690.

The spelling of 381630441 in words is "three hundred eighty-one million, six hundred thirty thousand, four hundred forty-one".