1197898345 has 16 divisors (see below), whose sum is σ = 1676361600. Its totient is φ = 821414832.

The previous prime is 1197898333. The next prime is 1197898357. The reversal of 1197898345 is 5438987911.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1197898333) and next prime (1197898357).

It is not a de Polignac number, because 1197898345 - 2²⁷ = 1063680617 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 347527 + ... + 350956.

It is an arithmetic number, because the mean of its divisors is an integer number (104772600).

Almost surely, 2^1197898345 is an apocalyptic number.

It is an amenable number.

1197898345 is a deficient number, since it is larger than the sum of its proper divisors (478463255).

1197898345 is an frugal number, since it uses more digits than its factorization.

1197898345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 698509 (or 698495 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 55.

The square root of 1197898345 is about 34610.6680808100. The cubic root of 1197898345 is about 1062.0378339674.

The spelling of 1197898345 in words is "one billion, one hundred ninety-seven million, eight hundred ninety-eight thousand, three hundred forty-five".