1138959949805 has 8 divisors (see below), whose sum is σ = 1366757805312. Its totient is φ = 911164049488.

The previous prime is 1138959949801. The next prime is 1138959949817. The reversal of 1138959949805 is 5089499598311.

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

It is a cyclic number.

It is not a de Polignac number, because 1138959949805 - 2² = 1138959949801 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138959949801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1619372 + ... + 2213658.

It is an arithmetic number, because the mean of its divisors is an integer number (170844725664).

Almost surely, 2^{1138959949805} is an apocalyptic number.

It is an amenable number.

1138959949805 is a deficient number, since it is larger than the sum of its proper divisors (227797855507).

1138959949805 is an equidigital number, since it uses as much as digits as its factorization.

1138959949805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 977595.

The product of its (nonzero) digits is 125971200, while the sum is 71.

The spelling of 1138959949805 in words is "one trillion, one hundred thirty-eight billion, nine hundred fifty-nine million, nine hundred forty-nine thousand, eight hundred five".