183145887 has 16 divisors (see below), whose sum is σ = 277102080. Its totient is φ = 119498616.

The previous prime is 183145873. The next prime is 183145903. The reversal of 183145887 is 788541381.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-183145887 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (183145867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70893 + ... + 73430.

It is an arithmetic number, because the mean of its divisors is an integer number (17318880).

Almost surely, 2^183145887 is an apocalyptic number.

183145887 is a deficient number, since it is larger than the sum of its proper divisors (93956193).

183145887 is a wasteful number, since it uses less digits than its factorization.

183145887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144379 (or 144373 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 183145887 is about 13533.1403229258. The cubic root of 183145887 is about 567.8919641364.

It can be divided in two parts, 183 and 145887, that added together give a triangular number (146070 = T₅₄₀).

The spelling of 183145887 in words is "one hundred eighty-three million, one hundred forty-five thousand, eight hundred eighty-seven".