1141872020909 has 4 divisors (see below), whose sum is σ = 1142177419680. Its totient is φ = 1141566622140.

The previous prime is 1141872020903. The next prime is 1141872020941. The reversal of 1141872020909 is 9090202781411.

It is a happy number.

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 not a de Polignac number, because 1141872020909 - 2²⁸ = 1141603585453 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1141872020909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1141872020903) 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, 152693777 + ... + 152701254.

It is an arithmetic number, because the mean of its divisors is an integer number (285544354920).

Almost surely, 2^{1141872020909} is an apocalyptic number.

It is an amenable number.

1141872020909 is a deficient number, since it is larger than the sum of its proper divisors (305398771).

1141872020909 is an equidigital number, since it uses as much as digits as its factorization.

1141872020909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305398770.

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 1141872020909 in words is "one trillion, one hundred forty-one billion, eight hundred seventy-two million, twenty thousand, nine hundred nine".