3821143145 has 4 divisors (see below), whose sum is σ = 4585371780. Its totient is φ = 3056914512.

The previous prime is 3821143141. The next prime is 3821143169. The reversal of 3821143145 is 5413411283.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2616220201 + 1204922944 = 51149^2 + 34712^2 .

It is a cyclic number.

It is not a de Polignac number, because 3821143145 - 2² = 3821143141 is a prime.

It is a super-2 number, since 2×3821143145² = 29202269869160982050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (3821143141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 382114310 + ... + 382114319.

It is an arithmetic number, because the mean of its divisors is an integer number (1146342945).

Almost surely, 2^3821143145 is an apocalyptic number.

It is an amenable number.

3821143145 is a deficient number, since it is larger than the sum of its proper divisors (764228635).

3821143145 is an equidigital number, since it uses as much as digits as its factorization.

3821143145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764228634.

The product of its digits is 11520, while the sum is 32.

The square root of 3821143145 is about 61815.3956955709. The cubic root of 3821143145 is about 1563.3795821590.

The spelling of 3821143145 in words is "three billion, eight hundred twenty-one million, one hundred forty-three thousand, one hundred forty-five".