19901131114 has 4 divisors (see below), whose sum is σ = 29851696674. Its totient is φ = 9950565556.

The previous prime is 19901131079. The next prime is 19901131123. The reversal of 19901131114 is 41113110991.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 18326390625 + 1574740489 = 135375^2 + 39683^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4975282777 + ... + 4975282780.

Almost surely, 2^19901131114 is an apocalyptic number.

19901131114 is a deficient number, since it is larger than the sum of its proper divisors (9950565560).

19901131114 is an equidigital number, since it uses as much as digits as its factorization.

19901131114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9950565559.

The product of its (nonzero) digits is 972, while the sum is 31.

The spelling of 19901131114 in words is "nineteen billion, nine hundred one million, one hundred thirty-one thousand, one hundred fourteen".