381690975345 has 16 divisors (see below), whose sum is σ = 610736335872. Its totient is φ = 203558261760.

The previous prime is 381690975293. The next prime is 381690975353. The reversal of 381690975345 is 543579096183.

It is not a de Polignac number, because 381690975345 - 2⁸ = 381690975089 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 328657 + ... + 933486.

It is an arithmetic number, because the mean of its divisors is an integer number (38171020992).

Almost surely, 2^381690975345 is an apocalyptic number.

It is an amenable number.

381690975345 is a deficient number, since it is larger than the sum of its proper divisors (229045360527).

381690975345 is a wasteful number, since it uses less digits than its factorization.

381690975345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1282312.

The product of its (nonzero) digits is 24494400, while the sum is 60.

The spelling of 381690975345 in words is "three hundred eighty-one billion, six hundred ninety million, nine hundred seventy-five thousand, three hundred forty-five".