381730419839 has 4 divisors (see below), whose sum is σ = 383708297856. Its totient is φ = 379752541824.

The previous prime is 381730419823. The next prime is 381730419881. The reversal of 381730419839 is 938914037183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 938914037183 = 37 ⋅25376055059.

It is a cyclic number.

It is not a de Polignac number, because 381730419839 - 2⁴ = 381730419823 is a prime.

It is a super-2 number, since 2×381730419839² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381730419139) 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, 988938719 + ... + 988939104.

It is an arithmetic number, because the mean of its divisors is an integer number (95927074464).

Almost surely, 2^381730419839 is an apocalyptic number.

381730419839 is a deficient number, since it is larger than the sum of its proper divisors (1977878017).

381730419839 is a wasteful number, since it uses less digits than its factorization.

381730419839 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1977878016.

The product of its (nonzero) digits is 3919104, while the sum is 56.

The spelling of 381730419839 in words is "three hundred eighty-one billion, seven hundred thirty million, four hundred nineteen thousand, eight hundred thirty-nine".