1241691552 has 96 divisors (see below), whose sum is σ = 3628497600. Its totient is φ = 413109504.

The previous prime is 1241691551. The next prime is 1241691569. The reversal of 1241691552 is 2551961421.

1241691552 is a `hidden beast` number, since 1 + 2 + 4 + 16 + 91 + 552 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1241691551) 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, 611563 + ... + 613589.

It is an arithmetic number, because the mean of its divisors is an integer number (37796850).

Almost surely, 2^1241691552 is an apocalyptic number.

1241691552 is a gapful number since it is divisible by the number (12) 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 1241691552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1814248800).

1241691552 is an abundant number, since it is smaller than the sum of its proper divisors (2386806048).

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

1241691552 is a wasteful number, since it uses less digits than its factorization.

1241691552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2755 (or 2741 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 1241691552 is about 35237.6439621039. The cubic root of 1241691552 is about 1074.8253697225.

The spelling of 1241691552 in words is "one billion, two hundred forty-one million, six hundred ninety-one thousand, five hundred fifty-two".