1131209404658 has 16 divisors (see below), whose sum is σ = 1701235962720. Its totient is φ = 564131342016.

The previous prime is 1131209404649. The next prime is 1131209404673. The reversal of 1131209404658 is 8564049021311.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3745466 + ... + 4036202.

It is an arithmetic number, because the mean of its divisors is an integer number (106327247670).

Almost surely, 2^{1131209404658} is an apocalyptic number.

1131209404658 is a deficient number, since it is larger than the sum of its proper divisors (570026558062).

1131209404658 is a wasteful number, since it uses less digits than its factorization.

1131209404658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295801.

The product of its (nonzero) digits is 207360, while the sum is 44.

The spelling of 1131209404658 in words is "one trillion, one hundred thirty-one billion, two hundred nine million, four hundred four thousand, six hundred fifty-eight".