1198532940 has 48 divisors (see below), whose sum is σ = 3660975360. Its totient is φ = 290553280.

The previous prime is 1198532899. The next prime is 1198532953. The reversal of 1198532940 is 492358911.

It is a junction number, because it is equal to n+sod(n) for n = 1198532892 and 1198532901.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 907320 + ... + 908639.

It is an arithmetic number, because the mean of its divisors is an integer number (76270320).

Almost surely, 2^1198532940 is an apocalyptic number.

1198532940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1198532940 is an abundant number, since it is smaller than the sum of its proper divisors (2462442420).

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

1198532940 is a wasteful number, since it uses less digits than its factorization.

1198532940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1815982 (or 1815980 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 1198532940 is about 34619.8344883392. The cubic root of 1198532940 is about 1062.2253415092.

The spelling of 1198532940 in words is "one billion, one hundred ninety-eight million, five hundred thirty-two thousand, nine hundred forty".