381354688867 has 4 divisors (see below), whose sum is σ = 393656453056. Its totient is φ = 369052924680.

The previous prime is 381354688853. The next prime is 381354688873. The reversal of 381354688867 is 768886453183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 768886453183 = 3739 ⋅205639597.

It is a cyclic number.

It is not a de Polignac number, because 381354688867 - 2¹⁹ = 381354164579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381354688877) 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, 6150882048 + ... + 6150882109.

It is an arithmetic number, because the mean of its divisors is an integer number (98414113264).

Almost surely, 2^381354688867 is an apocalyptic number.

381354688867 is a deficient number, since it is larger than the sum of its proper divisors (12301764189).

381354688867 is a wasteful number, since it uses less digits than its factorization.

381354688867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12301764188.

The product of its digits is 185794560, while the sum is 67.

The spelling of 381354688867 in words is "three hundred eighty-one billion, three hundred fifty-four million, six hundred eighty-eight thousand, eight hundred sixty-seven".