1197541538 has 16 divisors (see below), whose sum is σ = 1893054240. Its totient is φ = 566596800.

The previous prime is 1197541511. The next prime is 1197541549. The reversal of 1197541538 is 8351457911.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15593 + ... + 51363.

It is an arithmetic number, because the mean of its divisors is an integer number (118315890).

Almost surely, 2^1197541538 is an apocalyptic number.

1197541538 is a deficient number, since it is larger than the sum of its proper divisors (695512702).

1197541538 is a wasteful number, since it uses less digits than its factorization.

1197541538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36673.

The product of its digits is 151200, while the sum is 44.

The square root of 1197541538 is about 34605.5131156872. The cubic root of 1197541538 is about 1061.9323770046.

The spelling of 1197541538 in words is "one billion, one hundred ninety-seven million, five hundred forty-one thousand, five hundred thirty-eight".