1189199448 has 64 divisors (see below), whose sum is σ = 3349900800. Its totient is φ = 390811680.

The previous prime is 1189199441. The next prime is 1189199467. The reversal of 1189199448 is 8449919811.

1189199448 is a `hidden beast` number, since 1 + 1 + 8 + 9 + 199 + 448 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1189199394 and 1189199403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1189199441) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23436 + ... + 54107.

It is an arithmetic number, because the mean of its divisors is an integer number (52342200).

Almost surely, 2^1189199448 is an apocalyptic number.

1189199448 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1189199448 is an abundant number, since it is smaller than the sum of its proper divisors (2160701352).

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

1189199448 is a wasteful number, since it uses less digits than its factorization.

1189199448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77629 (or 77619 counting only the distinct ones).

The product of its digits is 746496, while the sum is 54.

The square root of 1189199448 is about 34484.7712476102. The cubic root of 1189199448 is about 1059.4608175134.

The spelling of 1189199448 in words is "one billion, one hundred eighty-nine million, one hundred ninety-nine thousand, four hundred forty-eight".