19448113290 has 48 divisors (see below), whose sum is σ = 49261398048. Its totient is φ = 4913204832.

The previous prime is 19448113259. The next prime is 19448113343. The reversal of 19448113290 is 9231184491.

It is a super-2 number, since 2×19448113290² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 887052 + ... + 908711.

It is an arithmetic number, because the mean of its divisors is an integer number (1026279126).

Almost surely, 2^19448113290 is an apocalyptic number.

19448113290 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19448113290 is an abundant number, since it is smaller than the sum of its proper divisors (29813284758).

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

19448113290 is a wasteful number, since it uses less digits than its factorization.

19448113290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795811 (or 1795792 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 42.

The spelling of 19448113290 in words is "nineteen billion, four hundred forty-eight million, one hundred thirteen thousand, two hundred ninety".