1198114440 has 128 divisors (see below), whose sum is σ = 3849120000. Its totient is φ = 297279488.

The previous prime is 1198114387. The next prime is 1198114447. The reversal of 1198114440 is 444118911.

It is a super-2 number, since 2×1198114440² = 2870956422673027200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1198114447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178261 + ... + 184859.

It is an arithmetic number, because the mean of its divisors is an integer number (30071250).

Almost surely, 2^1198114440 is an apocalyptic number.

1198114440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1198114440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1924560000).

1198114440 is an abundant number, since it is smaller than the sum of its proper divisors (2651005560).

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

1198114440 is a wasteful number, since it uses less digits than its factorization.

1198114440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6719 (or 6715 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 33.

The square root of 1198114440 is about 34613.7897376176. The cubic root of 1198114440 is about 1062.1016922705.

It can be divided in two parts, 119811 and 4440, that added together give a triangular number (124251 = T₄₉₈).

The spelling of 1198114440 in words is "one billion, one hundred ninety-eight million, one hundred fourteen thousand, four hundred forty".