1145917072 has 20 divisors (see below), whose sum is σ = 2226514860. Its totient is φ = 571332608.

The previous prime is 1145917051. The next prime is 1145917117. The reversal of 1145917072 is 2707195411.

It can be written as a sum of positive squares in 2 ways, for example, as 134931456 + 1010985616 = 11616^2 + 31796^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95797 + ... + 107092.

It is an arithmetic number, because the mean of its divisors is an integer number (111325743).

Almost surely, 2^1145917072 is an apocalyptic number.

It is an amenable number.

1145917072 is a deficient number, since it is larger than the sum of its proper divisors (1080597788).

1145917072 is a wasteful number, since it uses less digits than its factorization.

1145917072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203250 (or 203244 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 1145917072 is about 33851.3968987987. The cubic root of 1145917072 is about 1046.4481869610.

The spelling of 1145917072 in words is "one billion, one hundred forty-five million, nine hundred seventeen thousand, seventy-two".