4011802145 has 64 divisors (see below), whose sum is σ = 5574381120. Its totient is φ = 2749759488.

The previous prime is 4011802141. The next prime is 4011802169. The reversal of 4011802145 is 5412081104.

It can be written as a sum of positive squares in 32 ways, for example, as 1982119441 + 2029682704 = 44521^2 + 45052^2 .

It is not a de Polignac number, because 4011802145 - 2² = 4011802141 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4011802141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6764969 + ... + 6765561.

It is an arithmetic number, because the mean of its divisors is an integer number (87099705).

Almost surely, 2^4011802145 is an apocalyptic number.

4011802145 is the 36569-th octagonal number.

It is an amenable number.

4011802145 is a deficient number, since it is larger than the sum of its proper divisors (1562578975).

4011802145 is a wasteful number, since it uses less digits than its factorization.

4011802145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 774.

The product of its (nonzero) digits is 1280, while the sum is 26.

The square root of 4011802145 is about 63338.7886290857. The cubic root of 4011802145 is about 1588.9607471092.

Adding to 4011802145 its reverse (5412081104), we get a palindrome (9423883249).

The spelling of 4011802145 in words is "four billion, eleven million, eight hundred two thousand, one hundred forty-five".