1358541557018 has 4 divisors (see below), whose sum is σ = 2037812335530. Its totient is φ = 679270778508.

The previous prime is 1358541556997. The next prime is 1358541557027. The reversal of 1358541557018 is 8107551458531.

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., 696829266169 + 661712290849 = 834763^2 + 813457^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 339635389253 + ... + 339635389256.

Almost surely, 2^{1358541557018} is an apocalyptic number.

1358541557018 is a deficient number, since it is larger than the sum of its proper divisors (679270778512).

1358541557018 is an equidigital number, since it uses as much as digits as its factorization.

1358541557018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679270778511.

The product of its (nonzero) digits is 3360000, while the sum is 53.

The spelling of 1358541557018 in words is "one trillion, three hundred fifty-eight billion, five hundred forty-one million, five hundred fifty-seven thousand, eighteen".