1191553104 has 80 divisors (see below), whose sum is σ = 3522349952. Its totient is φ = 340015104.

The previous prime is 1191553087. The next prime is 1191553109. The reversal of 1191553104 is 4013551911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1191553109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 345372 + ... + 348804.

Almost surely, 2^1191553104 is an apocalyptic number.

1191553104 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1191553104 is an abundant number, since it is smaller than the sum of its proper divisors (2330796848).

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

1191553104 is a wasteful number, since it uses less digits than its factorization.

1191553104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4484 (or 4478 counting only the distinct ones).

The product of its (nonzero) digits is 2700, while the sum is 30.

The square root of 1191553104 is about 34518.8803989932. The cubic root of 1191553104 is about 1060.1593162698.

The spelling of 1191553104 in words is "one billion, one hundred ninety-one million, five hundred fifty-three thousand, one hundred four".