1145571648 has 56 divisors (see below), whose sum is σ = 3264151968. Its totient is φ = 352482816.

The previous prime is 1145571641. The next prime is 1145571667. The reversal of 1145571648 is 8461755411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1145571641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 226986 + ... + 231977.

It is an arithmetic number, because the mean of its divisors is an integer number (58288428).

Almost surely, 2^1145571648 is an apocalyptic number.

It is an amenable number.

1145571648 is an abundant number, since it is smaller than the sum of its proper divisors (2118580320).

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

1145571648 is a wasteful number, since it uses less digits than its factorization.

1145571648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 458991 (or 458981 counting only the distinct ones).

The product of its digits is 134400, while the sum is 42.

The square root of 1145571648 is about 33846.2944500576. The cubic root of 1145571648 is about 1046.3430296584.

The spelling of 1145571648 in words is "one billion, one hundred forty-five million, five hundred seventy-one thousand, six hundred forty-eight".