1198699140 has 24 divisors (see below), whose sum is σ = 3356357760. Its totient is φ = 319653088.

The previous prime is 1198699133. The next prime is 1198699157. The reversal of 1198699140 is 419968911.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1198699140.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9989100 + ... + 9989219.

It is an arithmetic number, because the mean of its divisors is an integer number (139848240).

Almost surely, 2^1198699140 is an apocalyptic number.

1198699140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1198699140 is an abundant number, since it is smaller than the sum of its proper divisors (2157658620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1198699140 is a wasteful number, since it uses less digits than its factorization.

1198699140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19978331 (or 19978329 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 48.

The square root of 1198699140 is about 34622.2347632269. The cubic root of 1198699140 is about 1062.2744386696.

The spelling of 1198699140 in words is "one billion, one hundred ninety-eight million, six hundred ninety-nine thousand, one hundred forty".