19091101040 has 40 divisors (see below), whose sum is σ = 48421976688. Its totient is φ = 6942218240.

The previous prime is 19091101021. The next prime is 19091101049. The reversal of 19091101040 is 4010119091.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19091101049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10846337 + ... + 10848096.

Almost surely, 2^19091101040 is an apocalyptic number.

19091101040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

19091101040 is an abundant number, since it is smaller than the sum of its proper divisors (29330875648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19091101040 is a wasteful number, since it uses less digits than its factorization.

19091101040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21694457 (or 21694451 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 19091101040 in words is "nineteen billion, ninety-one million, one hundred one thousand, forty".