19470113 has 4 divisors (see below), whose sum is σ = 20967828. Its totient is φ = 17972400.

The previous prime is 19470109. The next prime is 19470119. The reversal of 19470113 is 31107491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31107491 = 37 ⋅840743.

It can be written as a sum of positive squares in 2 ways, for example, as 5121169 + 14348944 = 2263^2 + 3788^2 .

It is a cyclic number.

It is not a de Polignac number, because 19470113 - 2² = 19470109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19470119) 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, 748838 + ... + 748863.

It is an arithmetic number, because the mean of its divisors is an integer number (5241957).

Almost surely, 2^19470113 is an apocalyptic number.

19470113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

19470113 is a deficient number, since it is larger than the sum of its proper divisors (1497715).

19470113 is a wasteful number, since it uses less digits than its factorization.

19470113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497714.

The product of its (nonzero) digits is 756, while the sum is 26.

The square root of 19470113 is about 4412.4950991474. The cubic root of 19470113 is about 269.0230491161.

It can be divided in two parts, 194 and 70113, that added together give a palindrome (70307).

The spelling of 19470113 in words is "nineteen million, four hundred seventy thousand, one hundred thirteen".