19427499948 has 12 divisors (see below), whose sum is σ = 45330833240. Its totient is φ = 6475833312.

The previous prime is 19427499941. The next prime is 19427499967. The reversal of 19427499948 is 84999472491.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (19427499941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 809479153 + ... + 809479176.

Almost surely, 2^19427499948 is an apocalyptic number.

It is an amenable number.

19427499948 is an abundant number, since it is smaller than the sum of its proper divisors (25903333292).

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

19427499948 is a wasteful number, since it uses less digits than its factorization.

19427499948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1618958336 (or 1618958334 counting only the distinct ones).

The product of its digits is 47029248, while the sum is 66.

The spelling of 19427499948 in words is "nineteen billion, four hundred twenty-seven million, four hundred ninety-nine thousand, nine hundred forty-eight".