19450207297 has 16 divisors (see below), whose sum is σ = 20866885200. Its totient is φ = 18064908288.

The previous prime is 19450207253. The next prime is 19450207303. The reversal of 19450207297 is 79270205491.

It is a happy number.

It is a Cunningham number, because it is equal to 139464²+1.

It can be written as a sum of positive squares in 8 ways, for example, as 711608976 + 18738598321 = 26676^2 + 136889^2 .

It is not a de Polignac number, because 19450207297 - 2¹¹ = 19450205249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19450207097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558603 + ... + 592399.

It is an arithmetic number, because the mean of its divisors is an integer number (1304180325).

Almost surely, 2^19450207297 is an apocalyptic number.

19450207297 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

19450207297 is a deficient number, since it is larger than the sum of its proper divisors (1416677903).

19450207297 is a wasteful number, since it uses less digits than its factorization.

19450207297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34260.

The product of its (nonzero) digits is 317520, while the sum is 46.

The spelling of 19450207297 in words is "nineteen billion, four hundred fifty million, two hundred seven thousand, two hundred ninety-seven".