19091000955 has 32 divisors (see below), whose sum is σ = 32906180160. Its totient is φ = 9395527680.

The previous prime is 19091000941. The next prime is 19091000989. The reversal of 19091000955 is 55900019091.

It is not a de Polignac number, because 19091000955 - 2⁸ = 19091000699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 640831 + ... + 669959.

It is an arithmetic number, because the mean of its divisors is an integer number (1028318130).

Almost surely, 2^19091000955 is an apocalyptic number.

19091000955 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19091000955 is a deficient number, since it is larger than the sum of its proper divisors (13815179205).

19091000955 is a wasteful number, since it uses less digits than its factorization.

19091000955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32511.

The product of its (nonzero) digits is 18225, while the sum is 39.

The spelling of 19091000955 in words is "nineteen billion, ninety-one million, nine hundred fifty-five", and thus it is an aban number.