381541951 has 8 divisors (see below), whose sum is σ = 451084320. Its totient is φ = 315758688.

The previous prime is 381541933. The next prime is 381541961. The reversal of 381541951 is 159145183.

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

It is not a de Polignac number, because 381541951 - 2²⁷ = 247324223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 381541951.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381541961) 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, 939556 + ... + 939961.

It is an arithmetic number, because the mean of its divisors is an integer number (56385540).

Almost surely, 2^381541951 is an apocalyptic number.

381541951 is a deficient number, since it is larger than the sum of its proper divisors (69542369).

381541951 is a wasteful number, since it uses less digits than its factorization.

381541951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879553.

The product of its digits is 21600, while the sum is 37.

The square root of 381541951 is about 19533.0988580921. The cubic root of 381541951 is about 725.2940232717.

The spelling of 381541951 in words is "three hundred eighty-one million, five hundred forty-one thousand, nine hundred fifty-one".