381553841 has 8 divisors (see below), whose sum is σ = 401183400. Its totient is φ = 362355840.

The previous prime is 381553813. The next prime is 381553853. The reversal of 381553841 is 148355183.

It can be written as a sum of positive squares in 4 ways, for example, as 5193841 + 376360000 = 2279^2 + 19400^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381553841 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381553795 and 381553804.

It is not an unprimeable number, because it can be changed into a prime (381553891) 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, 106076 + ... + 109613.

It is an arithmetic number, because the mean of its divisors is an integer number (50147925).

Almost surely, 2^381553841 is an apocalyptic number.

It is an amenable number.

381553841 is a deficient number, since it is larger than the sum of its proper divisors (19629559).

381553841 is a wasteful number, since it uses less digits than its factorization.

381553841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215779.

The product of its digits is 57600, while the sum is 38.

The square root of 381553841 is about 19533.4032109103. The cubic root of 381553841 is about 725.3015573111.

The spelling of 381553841 in words is "three hundred eighty-one million, five hundred fifty-three thousand, eight hundred forty-one".