381493742609 has 8 divisors (see below), whose sum is σ = 436024030080. Its totient is φ = 326971250496.

The previous prime is 381493742593. The next prime is 381493742621. The reversal of 381493742609 is 906247394183.

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

It is a cyclic number.

It is not a de Polignac number, because 381493742609 - 2⁴ = 381493742593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381493742809) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1843589 + ... + 2040050.

It is an arithmetic number, because the mean of its divisors is an integer number (54503003760).

Almost surely, 2^381493742609 is an apocalyptic number.

It is an amenable number.

381493742609 is a deficient number, since it is larger than the sum of its proper divisors (54530287471).

381493742609 is a wasteful number, since it uses less digits than its factorization.

381493742609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3897679.

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 381493742609 in words is "three hundred eighty-one billion, four hundred ninety-three million, seven hundred forty-two thousand, six hundred nine".