1997324253 has 24 divisors (see below), whose sum is σ = 2905943040. Its totient is φ = 1321930080.

The previous prime is 1997324149. The next prime is 1997324257. The reversal of 1997324253 is 3524237991.

1997324253 is a `hidden beast` number, since 199 + 7 + 32 + 425 + 3 = 666.

It is not a de Polignac number, because 1997324253 - 2¹⁴ = 1997307869 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1997324199 and 1997324208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1997324257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 863863 + ... + 866171.

It is an arithmetic number, because the mean of its divisors is an integer number (121080960).

Almost surely, 2^1997324253 is an apocalyptic number.

It is an amenable number.

1997324253 is a deficient number, since it is larger than the sum of its proper divisors (908618787).

1997324253 is a wasteful number, since it uses less digits than its factorization.

1997324253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2969 (or 2966 counting only the distinct ones).

The product of its digits is 408240, while the sum is 45.

The square root of 1997324253 is about 44691.4337765080. The cubic root of 1997324253 is about 1259.3589274758.

The spelling of 1997324253 in words is "one billion, nine hundred ninety-seven million, three hundred twenty-four thousand, two hundred fifty-three".