11850975890 has 32 divisors (see below), whose sum is σ = 22981175280. Its totient is φ = 4374123264.

The previous prime is 11850975869. The next prime is 11850975901. The reversal of 11850975890 is 9857905811.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 3454735729 + 8396240161 = 58777^2 + 91631^2 .

It is a super-2 number, since 2×11850975890² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 368996 + ... + 399824.

Almost surely, 2^11850975890 is an apocalyptic number.

11850975890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11850975890 is a deficient number, since it is larger than the sum of its proper divisors (11130199390).

11850975890 is a wasteful number, since it uses less digits than its factorization.

11850975890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33806.

The product of its (nonzero) digits is 907200, while the sum is 53.

The spelling of 11850975890 in words is "eleven billion, eight hundred fifty million, nine hundred seventy-five thousand, eight hundred ninety".