19974267953 has 8 divisors (see below), whose sum is σ = 20262444840. Its totient is φ = 19687507840.

The previous prime is 19974267941. The next prime is 19974267967. The reversal of 19974267953 is 35976247991.

It can be written as a sum of positive squares in 4 ways, for example, as 1783541824 + 18190726129 = 42232^2 + 134873^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19974267953 - 2⁶ = 19974267889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19974267983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325778 + ... + 382203.

It is an arithmetic number, because the mean of its divisors is an integer number (2532805605).

Almost surely, 2^19974267953 is an apocalyptic number.

It is an amenable number.

19974267953 is a deficient number, since it is larger than the sum of its proper divisors (288176887).

19974267953 is an equidigital number, since it uses as much as digits as its factorization.

19974267953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708387.

The product of its digits is 25719120, while the sum is 62.

The spelling of 19974267953 in words is "nineteen billion, nine hundred seventy-four million, two hundred sixty-seven thousand, nine hundred fifty-three".