1198671387 has 8 divisors (see below), whose sum is σ = 1604448336. Its totient is φ = 796004352.

The previous prime is 1198671379. The next prime is 1198671407. The reversal of 1198671387 is 7831768911.

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

It is not a de Polignac number, because 1198671387 - 2³ = 1198671379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1198671307) 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, 776578 + ... + 778119.

It is an arithmetic number, because the mean of its divisors is an integer number (200556042).

Almost surely, 2^1198671387 is an apocalyptic number.

1198671387 is a deficient number, since it is larger than the sum of its proper divisors (405776949).

1198671387 is a wasteful number, since it uses less digits than its factorization.

1198671387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554957.

The product of its digits is 508032, while the sum is 51.

The square root of 1198671387 is about 34621.8339635554. The cubic root of 1198671387 is about 1062.2662404685.

The spelling of 1198671387 in words is "one billion, one hundred ninety-eight million, six hundred seventy-one thousand, three hundred eighty-seven".