1138618705645 has 8 divisors (see below), whose sum is σ = 1425748640256. Its totient is φ = 871290835536.

The previous prime is 1138618705607. The next prime is 1138618705649. The reversal of 1138618705645 is 5465078168311.

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 1138618705645 - 2²⁹ = 1138081834733 is a prime.

It is a super-3 number, since 3×1138618705645³ (a number of 37 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1138618705649) 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, 4950515997 + ... + 4950516226.

It is an arithmetic number, because the mean of its divisors is an integer number (178218580032).

Almost surely, 2^{1138618705645} is an apocalyptic number.

It is an amenable number.

1138618705645 is a deficient number, since it is larger than the sum of its proper divisors (287129934611).

1138618705645 is an equidigital number, since it uses as much as digits as its factorization.

1138618705645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9901032251.

The product of its (nonzero) digits is 4838400, while the sum is 55.

The spelling of 1138618705645 in words is "one trillion, one hundred thirty-eight billion, six hundred eighteen million, seven hundred five thousand, six hundred forty-five".