381494293 has 4 divisors (see below), whose sum is σ = 401572960. Its totient is φ = 361415628.

The previous prime is 381494291. The next prime is 381494303. The reversal of 381494293 is 392494183.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 392494183 = 89 ⋅4410047.

It is a cyclic number.

It is not a de Polignac number, because 381494293 - 2¹ = 381494291 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 (381494291) 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, 10039305 + ... + 10039342.

It is an arithmetic number, because the mean of its divisors is an integer number (100393240).

Almost surely, 2^381494293 is an apocalyptic number.

It is an amenable number.

381494293 is a deficient number, since it is larger than the sum of its proper divisors (20078667).

381494293 is a wasteful number, since it uses less digits than its factorization.

381494293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20078666.

The product of its digits is 186624, while the sum is 43.

The square root of 381494293 is about 19531.8788906751. The cubic root of 381494293 is about 725.2638234454.

The spelling of 381494293 in words is "three hundred eighty-one million, four hundred ninety-four thousand, two hundred ninety-three".