1189685345501 has 4 divisors (see below), whose sum is σ = 1189976155104. Its totient is φ = 1189394535900.

The previous prime is 1189685345461. The next prime is 1189685345507. The reversal of 1189685345501 is 1055435869811.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1189685345501 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 (1189685345507) 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, 145398665 + ... + 145406846.

It is an arithmetic number, because the mean of its divisors is an integer number (297494038776).

Almost surely, 2^{1189685345501} is an apocalyptic number.

It is an amenable number.

1189685345501 is a deficient number, since it is larger than the sum of its proper divisors (290809603).

1189685345501 is an equidigital number, since it uses as much as digits as its factorization.

1189685345501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290809602.

The product of its (nonzero) digits is 5184000, while the sum is 56.

The spelling of 1189685345501 in words is "one trillion, one hundred eighty-nine billion, six hundred eighty-five million, three hundred forty-five thousand, five hundred one".