1198638016 has 28 divisors (see below), whose sum is σ = 2382633792. Its totient is φ = 598289408.

The previous prime is 1198637969. The next prime is 1198638019. The reversal of 1198638016 is 6108368911.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1198638019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22161 + ... + 53743.

It is an arithmetic number, because the mean of its divisors is an integer number (85094064).

Almost surely, 2^1198638016 is an apocalyptic number.

1198638016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1198638016 is a deficient number, since it is larger than the sum of its proper divisors (1183995776).

1198638016 is an equidigital number, since it uses as much as digits as its factorization.

1198638016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32188 (or 32178 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 1198638016 is about 34621.3520244372. The cubic root of 1198638016 is about 1062.2563825496.

The spelling of 1198638016 in words is "one billion, one hundred ninety-eight million, six hundred thirty-eight thousand, sixteen".