1181452454738 has 4 divisors (see below), whose sum is σ = 1772178682110. Its totient is φ = 590726227368.

The previous prime is 1181452454729. The next prime is 1181452454753. The reversal of 1181452454738 is 8374542541811.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 764675044849 + 416777409889 = 874457^2 + 645583^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1181452454738.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 295363113683 + ... + 295363113686.

Almost surely, 2^{1181452454738} is an apocalyptic number.

1181452454738 is a deficient number, since it is larger than the sum of its proper divisors (590726227372).

1181452454738 is an equidigital number, since it uses as much as digits as its factorization.

1181452454738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590726227371.

The product of its digits is 4300800, while the sum is 53.

The spelling of 1181452454738 in words is "one trillion, one hundred eighty-one billion, four hundred fifty-two million, four hundred fifty-four thousand, seven hundred thirty-eight".