1197898394 has 48 divisors (see below), whose sum is σ = 2335931136. Its totient is φ = 455313600.

The previous prime is 1197898393. The next prime is 1197898399. The reversal of 1197898394 is 4938987911.

It is not an unprimeable number, because it can be changed into a prime (1197898393) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 30647 + ... + 57749.

It is an arithmetic number, because the mean of its divisors is an integer number (48665232).

Almost surely, 2^1197898394 is an apocalyptic number.

1197898394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1197898394 is a deficient number, since it is larger than the sum of its proper divisors (1138032742).

1197898394 is a wasteful number, since it uses less digits than its factorization.

1197898394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27171 (or 27164 counting only the distinct ones).

The product of its digits is 3919104, while the sum is 59.

The square root of 1197898394 is about 34610.6687886842. The cubic root of 1197898394 is about 1062.0378484483.

The spelling of 1197898394 in words is "one billion, one hundred ninety-seven million, eight hundred ninety-eight thousand, three hundred ninety-four".