1068140491949 has 4 divisors (see below), whose sum is σ = 1069704387936. Its totient is φ = 1066576595964.

The previous prime is 1068140491937. The next prime is 1068140491973. The reversal of 1068140491949 is 9491940418601.

1068140491949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1068140491949 - 2⁴ = 1068140491933 is a prime.

It is a super-2 number, since 2×1068140491949² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1068140491894 and 1068140491903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1068140491849) 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, 781946969 + ... + 781948334.

It is an arithmetic number, because the mean of its divisors is an integer number (267426096984).

Almost surely, 2^{1068140491949} is an apocalyptic number.

It is an amenable number.

1068140491949 is a deficient number, since it is larger than the sum of its proper divisors (1563895987).

1068140491949 is an equidigital number, since it uses as much as digits as its factorization.

1068140491949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563895986.

The product of its (nonzero) digits is 2239488, while the sum is 56.

The spelling of 1068140491949 in words is "one trillion, sixty-eight billion, one hundred forty million, four hundred ninety-one thousand, nine hundred forty-nine".