1491491478182 has 16 divisors (see below), whose sum is σ = 2260427537760. Its totient is φ = 738016489728.

The previous prime is 1491491478181. The next prime is 1491491478187. The reversal of 1491491478182 is 2818741941941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491491478181) 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, 3433919 + ... + 3843797.

It is an arithmetic number, because the mean of its divisors is an integer number (141276721110).

Almost surely, 2^{1491491478182} is an apocalyptic number.

1491491478182 is a deficient number, since it is larger than the sum of its proper divisors (768936059578).

1491491478182 is a wasteful number, since it uses less digits than its factorization.

1491491478182 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428735.

The product of its digits is 4644864, while the sum is 59.

The spelling of 1491491478182 in words is "one trillion, four hundred ninety-one billion, four hundred ninety-one million, four hundred seventy-eight thousand, one hundred eighty-two".