1109396651842 has 8 divisors (see below), whose sum is σ = 1664125559100. Its totient is φ = 554688132144.

The previous prime is 1109396651819. The next prime is 1109396651849. The reversal of 1109396651842 is 2481566939011.

It is a Cunningham number, because it is equal to 1053279²+1.

It can be written as a sum of positive squares in 2 ways, for example, as 1109396651841 + 1 = 1053279^2 + 1^2 .

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

It is a super-2 number, since 2×1109396651842² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1109396651849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4960117 + ... + 5178952.

Almost surely, 2^{1109396651842} is an apocalyptic number.

1109396651842 is a deficient number, since it is larger than the sum of its proper divisors (554728907258).

1109396651842 is a wasteful number, since it uses less digits than its factorization.

1109396651842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10193780.

The product of its (nonzero) digits is 2799360, while the sum is 55.

The spelling of 1109396651842 in words is "one trillion, one hundred nine billion, three hundred ninety-six million, six hundred fifty-one thousand, eight hundred forty-two".