19450018875 has 32 divisors (see below), whose sum is σ = 36988383744. Its totient is φ = 8891436000.

The previous prime is 19450018873. The next prime is 19450018897. The reversal of 19450018875 is 57881005491.

It is a happy number.

It is not a de Polignac number, because 19450018875 - 2¹ = 19450018873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19450018871) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3702141 + ... + 3707390.

It is an arithmetic number, because the mean of its divisors is an integer number (1155886992).

Almost surely, 2^19450018875 is an apocalyptic number.

19450018875 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19450018875 is a deficient number, since it is larger than the sum of its proper divisors (17538364869).

19450018875 is an equidigital number, since it uses as much as digits as its factorization.

19450018875 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7409556 (or 7409546 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 48.

The spelling of 19450018875 in words is "nineteen billion, four hundred fifty million, eighteen thousand, eight hundred seventy-five".