1491199471182 has 64 divisors (see below), whose sum is σ = 3034927699200. Its totient is φ = 488390411520.

The previous prime is 1491199471171. The next prime is 1491199471183. The reversal of 1491199471182 is 2811749911941.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1491199471183) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 65567569 + ... + 65590307.

It is an arithmetic number, because the mean of its divisors is an integer number (47420745300).

Almost surely, 2^{1491199471182} is an apocalyptic number.

1491199471182 is an abundant number, since it is smaller than the sum of its proper divisors (1543728228018).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1491199471182 is a wasteful number, since it uses less digits than its factorization.

1491199471182 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23601.

The product of its digits is 1306368, while the sum is 57.

The spelling of 1491199471182 in words is "one trillion, four hundred ninety-one billion, one hundred ninety-nine million, four hundred seventy-one thousand, one hundred eighty-two".