19470853444 has 27 divisors (see below), whose sum is σ = 39641071743. Its totient is φ = 8343814248.

The previous prime is 19470853433. The next prime is 19470853453. The reversal of 19470853444 is 44435807491.

It is a happy number.

The square root of 19470853444 is 139538.

It is a perfect power (a square), and thus also a powerful number.

It is a super-2 number, since 2×19470853444² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1948549 + ... + 1958515.

Almost surely, 2^19470853444 is an apocalyptic number.

19470853444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19470853444 is the 139538-th square number.

It is an amenable number.

19470853444 is an abundant number, since it is smaller than the sum of its proper divisors (20170218299).

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

19470853444 is an frugal number, since it uses more digits than its factorization.

19470853444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19952 (or 9976 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 49.

Multiplying 19470853444 by its sum of digits (49), we get a square (954071818756 = 976766²).

19470853444 divided by its sum of digits (49) gives a square (397364356 = 19934²).

The spelling of 19470853444 in words is "nineteen billion, four hundred seventy million, eight hundred fifty-three thousand, four hundred forty-four".