1011890383869 has 32 divisors (see below), whose sum is σ = 1432607057280. Its totient is φ = 633110556672.

The previous prime is 1011890383859. The next prime is 1011890383871. The reversal of 1011890383869 is 9683830981101.

It is not a de Polignac number, because 1011890383869 - 2²⁵ = 1011856829437 is a prime.

It is a super-2 number, since 2×1011890383869² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011890383859) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45678654 + ... + 45700800.

It is an arithmetic number, because the mean of its divisors is an integer number (44768970540).

Almost surely, 2^{1011890383869} is an apocalyptic number.

It is an amenable number.

1011890383869 is a deficient number, since it is larger than the sum of its proper divisors (420716673411).

1011890383869 is a wasteful number, since it uses less digits than its factorization.

1011890383869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24669.

The product of its (nonzero) digits is 2239488, while the sum is 57.

The spelling of 1011890383869 in words is "one trillion, eleven billion, eight hundred ninety million, three hundred eighty-three thousand, eight hundred sixty-nine".