19046455905 has 32 divisors (see below), whose sum is σ = 31943640960. Its totient is φ = 9679864320.

The previous prime is 19046455877. The next prime is 19046455907. The reversal of 19046455905 is 50955464091.

It is not a de Polignac number, because 19046455905 - 2⁵ = 19046455873 is a prime.

It is a super-2 number, since 2×19046455905² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19046455907) 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 31 ways as a sum of consecutive naturals, for example, 333670 + ... + 386559.

It is an arithmetic number, because the mean of its divisors is an integer number (998238780).

Almost surely, 2^19046455905 is an apocalyptic number.

19046455905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19046455905 is a deficient number, since it is larger than the sum of its proper divisors (12897185055).

19046455905 is a wasteful number, since it uses less digits than its factorization.

19046455905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 720321.

The product of its (nonzero) digits is 972000, while the sum is 48.

The spelling of 19046455905 in words is "nineteen billion, forty-six million, four hundred fifty-five thousand, nine hundred five".