11944111990 has 8 divisors (see below), whose sum is σ = 21499401600. Its totient is φ = 4777644792.

The previous prime is 11944111979. The next prime is 11944112009. The reversal of 11944111990 is 9911144911.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×11944111990² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 597205590 + ... + 597205609.

It is an arithmetic number, because the mean of its divisors is an integer number (2687425200).

Almost surely, 2^11944111990 is an apocalyptic number.

11944111990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11944111990 is a deficient number, since it is larger than the sum of its proper divisors (9555289610).

11944111990 is a wasteful number, since it uses less digits than its factorization.

11944111990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1194411206.

The product of its (nonzero) digits is 11664, while the sum is 40.

The spelling of 11944111990 in words is "eleven billion, nine hundred forty-four million, one hundred eleven thousand, nine hundred ninety".