1157172048 has 160 divisors (see below), whose sum is σ = 3702441600. Its totient is φ = 343885824.

The previous prime is 1157172019. The next prime is 1157172059. The reversal of 1157172048 is 8402717511.

1157172048 is a `hidden beast` number, since 11 + 571 + 72 + 0 + 4 + 8 = 666.

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

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 135390 + ... + 143682.

It is an arithmetic number, because the mean of its divisors is an integer number (23140260).

Almost surely, 2^1157172048 is an apocalyptic number.

1157172048 is a gapful number since it is divisible by the number (18) 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 1157172048, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1851220800).

1157172048 is an abundant number, since it is smaller than the sum of its proper divisors (2545269552).

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

1157172048 is a wasteful number, since it uses less digits than its factorization.

1157172048 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8346 (or 8334 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 36.

The square root of 1157172048 is about 34017.2316333943. The cubic root of 1157172048 is about 1049.8630351959.

Adding to 1157172048 its reverse (8402717511), we get a palindrome (9559889559).

The spelling of 1157172048 in words is "one billion, one hundred fifty-seven million, one hundred seventy-two thousand, forty-eight".