381193 has 4 divisors (see below), whose sum is σ = 382788. Its totient is φ = 379600.

The previous prime is 381181. The next prime is 381209. The reversal of 381193 is 391183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 391183 = 13 ⋅30091.

It can be written as a sum of positive squares in 2 ways, for example, as 153664 + 227529 = 392^2 + 477^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381103) 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, 358 + ... + 943.

It is an arithmetic number, because the mean of its divisors is an integer number (95697).

2³⁸¹¹⁹³ is an apocalyptic number.

It is an amenable number.

381193 is a deficient number, since it is larger than the sum of its proper divisors (1595).

381193 is a wasteful number, since it uses less digits than its factorization.

381193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1594.

The product of its digits is 648, while the sum is 25.

The square root of 381193 is about 617.4082927853. The cubic root of 381193 is about 72.5072842463.

The spelling of 381193 in words is "three hundred eighty-one thousand, one hundred ninety-three".