11419351861 has 16 divisors (see below), whose sum is σ = 12093684160. Its totient is φ = 10752497280.

The previous prime is 11419351817. The next prime is 11419351871. The reversal of 11419351861 is 16815391411.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11419351861 - 2¹⁹ = 11418827573 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 (11419351871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3995545 + ... + 3998401.

It is an arithmetic number, because the mean of its divisors is an integer number (755855260).

Almost surely, 2^11419351861 is an apocalyptic number.

It is an amenable number.

11419351861 is a deficient number, since it is larger than the sum of its proper divisors (674332299).

11419351861 is a wasteful number, since it uses less digits than its factorization.

11419351861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4084.

The product of its digits is 25920, while the sum is 40.

The spelling of 11419351861 in words is "eleven billion, four hundred nineteen million, three hundred fifty-one thousand, eight hundred sixty-one".