381325170887 has 4 divisors (see below), whose sum is σ = 387016591416. Its totient is φ = 375633750360.

The previous prime is 381325170803. The next prime is 381325170893. The reversal of 381325170887 is 788071523183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 381325170887 - 2¹² = 381325166791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381325170487) 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, 2845710164 + ... + 2845710297.

It is an arithmetic number, because the mean of its divisors is an integer number (96754147854).

Almost surely, 2^381325170887 is an apocalyptic number.

381325170887 is a deficient number, since it is larger than the sum of its proper divisors (5691420529).

381325170887 is an equidigital number, since it uses as much as digits as its factorization.

381325170887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5691420528.

The product of its (nonzero) digits is 2257920, while the sum is 53.

The spelling of 381325170887 in words is "three hundred eighty-one billion, three hundred twenty-five million, one hundred seventy thousand, eight hundred eighty-seven".