1197870243 has 8 divisors (see below), whose sum is σ = 1612087488. Its totient is φ = 791116584.

The previous prime is 1197870241. The next prime is 1197870253. The reversal of 1197870243 is 3420787911.

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

It is not a de Polignac number, because 1197870243 - 2¹ = 1197870241 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 1197870195 and 1197870204.

It is not an unprimeable number, because it can be changed into a prime (1197870241) 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, 1865521 + ... + 1866162.

It is an arithmetic number, because the mean of its divisors is an integer number (201510936).

Almost surely, 2^1197870243 is an apocalyptic number.

1197870243 is a deficient number, since it is larger than the sum of its proper divisors (414217245).

1197870243 is a wasteful number, since it uses less digits than its factorization.

1197870243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3731793.

The product of its (nonzero) digits is 84672, while the sum is 42.

The square root of 1197870243 is about 34610.2621053352. The cubic root of 1197870243 is about 1062.0295289721.

The spelling of 1197870243 in words is "one billion, one hundred ninety-seven million, eight hundred seventy thousand, two hundred forty-three".