1491244383994 has 16 divisors (see below), whose sum is σ = 2493102067200. Its totient is φ = 664827217344.

The previous prime is 1491244383961. The next prime is 1491244383997. The reversal of 1491244383994 is 4993834421941.

It is not an unprimeable number, because it can be changed into a prime (1491244383997) 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, 1154213274 + ... + 1154214565.

It is an arithmetic number, because the mean of its divisors is an integer number (155818879200).

Almost surely, 2^{1491244383994} is an apocalyptic number.

1491244383994 is a deficient number, since it is larger than the sum of its proper divisors (1001857683206).

1491244383994 is a wasteful number, since it uses less digits than its factorization.

1491244383994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2308427877.

The product of its digits is 26873856, while the sum is 61.

The spelling of 1491244383994 in words is "one trillion, four hundred ninety-one billion, two hundred forty-four million, three hundred eighty-three thousand, nine hundred ninety-four".