1156275648 has 224 divisors, whose sum is σ = 3759037440. Its totient is φ = 349920000.

The previous prime is 1156275643. The next prime is 1156275649. The reversal of 1156275648 is 8465726511.

1156275648 is a `hidden beast` number, since 1 + 15 + 627 + 5 + 6 + 4 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1156275643) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1539273 + ... + 1540023.

Almost surely, 2^1156275648 is an apocalyptic number.

1156275648 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 1156275648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1879518720).

1156275648 is an abundant number, since it is smaller than the sum of its proper divisors (2602761792).

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

1156275648 is an frugal number, since it uses more digits than its factorization.

1156275648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 795 (or 767 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 1156275648 is about 34004.0534054398. The cubic root of 1156275648 is about 1049.5918740386.

The spelling of 1156275648 in words is "one billion, one hundred fifty-six million, two hundred seventy-five thousand, six hundred forty-eight".