1194427991952 has 800 divisors, whose sum is σ = 3965521190400. Its totient is φ = 344333721600.

The previous prime is 1194427991909. The next prime is 1194427991987. The reversal of 1194427991952 is 2591997244911.

1194427991952 is a `hidden beast` number, since 1 + 19 + 4 + 427 + 9 + 9 + 195 + 2 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 1194427991952.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 7910119077 + ... + 7910119227.

It is an arithmetic number, because the mean of its divisors is an integer number (4956901488).

Almost surely, 2^{1194427991952} is an apocalyptic number.

1194427991952 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1194427991952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1982760595200).

1194427991952 is an abundant number, since it is smaller than the sum of its proper divisors (2771093198448).

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

1194427991952 is a wasteful number, since it uses less digits than its factorization.

1194427991952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 493 (or 478 counting only the distinct ones).

The product of its digits is 14696640, while the sum is 63.

The spelling of 1194427991952 in words is "one trillion, one hundred ninety-four billion, four hundred twenty-seven million, nine hundred ninety-one thousand, nine hundred fifty-two".