1145472885 has 48 divisors (see below), whose sum is σ = 2063458800. Its totient is φ = 587123712.

The previous prime is 1145472871. The next prime is 1145472917. The reversal of 1145472885 is 5882745411.

1145472885 is a `hidden beast` number, since 1 + 1 + 4 + 547 + 28 + 85 = 666.

It can be written as a sum of positive squares in 8 ways, for example, as 2965284 + 1142507601 = 1722^2 + 33801^2 .

It is not a de Polignac number, because 1145472885 - 2¹³ = 1145464693 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1145472885.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 296929 + ... + 300761.

It is an arithmetic number, because the mean of its divisors is an integer number (42988725).

Almost surely, 2^1145472885 is an apocalyptic number.

1145472885 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1145472885 is a deficient number, since it is larger than the sum of its proper divisors (917985915).

1145472885 is a wasteful number, since it uses less digits than its factorization.

1145472885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4102 (or 4099 counting only the distinct ones).

The product of its digits is 358400, while the sum is 45.

The square root of 1145472885 is about 33844.8354258076. The cubic root of 1145472885 is about 1046.3129593883.

The spelling of 1145472885 in words is "one billion, one hundred forty-five million, four hundred seventy-two thousand, eight hundred eighty-five".