1997858610433 has 8 divisors (see below), whose sum is σ = 2297274757568. Its totient is φ = 1701944406864.

The previous prime is 1997858610331. The next prime is 1997858610491. The reversal of 1997858610433 is 3340168587991.

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 1997858610433 - 2⁹ = 1997858609921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1997858610533) 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, 875484666 + ... + 875486947.

It is an arithmetic number, because the mean of its divisors is an integer number (287159344696).

Almost surely, 2^{1997858610433} is an apocalyptic number.

It is an amenable number.

1997858610433 is a deficient number, since it is larger than the sum of its proper divisors (299416147135).

1997858610433 is a wasteful number, since it uses less digits than its factorization.

1997858610433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1750971783.

The product of its (nonzero) digits is 39191040, while the sum is 64.

The spelling of 1997858610433 in words is "one trillion, nine hundred ninety-seven billion, eight hundred fifty-eight million, six hundred ten thousand, four hundred thirty-three".