19496971 has 4 divisors (see below), whose sum is σ = 20996752. Its totient is φ = 17997192.

The previous prime is 19496959. The next prime is 19496987. The reversal of 19496971 is 17969491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19496971 - 2⁹ = 19496459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19496921) 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, 749871 + ... + 749896.

It is an arithmetic number, because the mean of its divisors is an integer number (5249188).

Almost surely, 2^19496971 is an apocalyptic number.

19496971 is a deficient number, since it is larger than the sum of its proper divisors (1499781).

19496971 is a wasteful number, since it uses less digits than its factorization.

19496971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499780.

The product of its digits is 122472, while the sum is 46.

The square root of 19496971 is about 4415.5374531307. The cubic root of 19496971 is about 269.1466933434.

It can be divided in two parts, 19 and 496971, that multiplied together give a palindrome (9442449).

The spelling of 19496971 in words is "nineteen million, four hundred ninety-six thousand, nine hundred seventy-one".