1138181136253 has 4 divisors (see below), whose sum is σ = 1300778441440. Its totient is φ = 975583831068.

The previous prime is 1138181136227. The next prime is 1138181136263. The reversal of 1138181136253 is 3526311818311.

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 not a de Polignac number, because 1138181136253 - 2¹³ = 1138181128061 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 (1138181136263) 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, 81298652583 + ... + 81298652596.

It is an arithmetic number, because the mean of its divisors is an integer number (325194610360).

Almost surely, 2^{1138181136253} is an apocalyptic number.

It is an amenable number.

1138181136253 is a deficient number, since it is larger than the sum of its proper divisors (162597305187).

1138181136253 is an equidigital number, since it uses as much as digits as its factorization.

1138181136253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162597305186.

The product of its digits is 103680, while the sum is 43.

The spelling of 1138181136253 in words is "one trillion, one hundred thirty-eight billion, one hundred eighty-one million, one hundred thirty-six thousand, two hundred fifty-three".