1123840651394 has 8 divisors (see below), whose sum is σ = 1685765586960. Its totient is φ = 561918789076.

The previous prime is 1123840651393. The next prime is 1123840651397. The reversal of 1123840651394 is 4931560483211.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (1123840651393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 731297 + ... + 1668075.

It is an arithmetic number, because the mean of its divisors is an integer number (210720698370).

Almost surely, 2^{1123840651394} is an apocalyptic number.

1123840651394 is a deficient number, since it is larger than the sum of its proper divisors (561924935566).

1123840651394 is an equidigital number, since it uses as much as digits as its factorization.

1123840651394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1536624.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 1123840651394 in words is "one trillion, one hundred twenty-three billion, eight hundred forty million, six hundred fifty-one thousand, three hundred ninety-four".