1233985275 has 18 divisors (see below), whose sum is σ = 2210205140. Its totient is φ = 658125360.

The previous prime is 1233985271. The next prime is 1233985289. The reversal of 1233985275 is 5725893321.

1233985275 is a `hidden beast` number, since 1 + 2 + 33 + 98 + 527 + 5 = 666.

It is not a de Polignac number, because 1233985275 - 2² = 1233985271 is a prime.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1233985275.

It is not an unprimeable number, because it can be changed into a prime (1233985271) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2741965 + ... + 2742414.

Almost surely, 2^1233985275 is an apocalyptic number.

1233985275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1233985275 is a deficient number, since it is larger than the sum of its proper divisors (976219865).

1233985275 is a wasteful number, since it uses less digits than its factorization.

1233985275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5484395 (or 5484387 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 1233985275 is about 35128.1265512410. The cubic root of 1233985275 is about 1072.5972005080.

The spelling of 1233985275 in words is "one billion, two hundred thirty-three million, nine hundred eighty-five thousand, two hundred seventy-five".