381091427615 has 8 divisors (see below), whose sum is σ = 477192744288. Its totient is φ = 291617788000.

The previous prime is 381091427593. The next prime is 381091427627. The reversal of 381091427615 is 516724190183.

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

It is not a de Polignac number, because 381091427615 - 2¹⁰ = 381091426591 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 381091427615.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1656919136 + ... + 1656919365.

It is an arithmetic number, because the mean of its divisors is an integer number (59649093036).

It is a 1-persistent number, because it is pandigital, but 2⋅381091427615 = 762182855230 is not.

Almost surely, 2^381091427615 is an apocalyptic number.

381091427615 is a deficient number, since it is larger than the sum of its proper divisors (96101316673).

381091427615 is a wasteful number, since it uses less digits than its factorization.

381091427615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3313838529.

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 381091427615 in words is "three hundred eighty-one billion, ninety-one million, four hundred twenty-seven thousand, six hundred fifteen".