3821502145 has 4 divisors (see below), whose sum is σ = 4585802580. Its totient is φ = 3057201712.

The previous prime is 3821502143. The next prime is 3821502151. The reversal of 3821502145 is 5412051283.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5412051283 = 2297 ⋅2356139.

It can be written as a sum of positive squares in 2 ways, for example, as 1943839921 + 1877662224 = 44089^2 + 43332^2 .

It is a cyclic number.

It is not a de Polignac number, because 3821502145 - 2¹ = 3821502143 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3821502143) 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 3 ways as a sum of consecutive naturals, for example, 382150210 + ... + 382150219.

It is an arithmetic number, because the mean of its divisors is an integer number (1146450645).

Almost surely, 2^3821502145 is an apocalyptic number.

It is an amenable number.

3821502145 is a deficient number, since it is larger than the sum of its proper divisors (764300435).

3821502145 is an equidigital number, since it uses as much as digits as its factorization.

3821502145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 764300434.

The product of its (nonzero) digits is 9600, while the sum is 31.

The square root of 3821502145 is about 61818.2994347143. The cubic root of 3821502145 is about 1563.4285409542.

The spelling of 3821502145 in words is "three billion, eight hundred twenty-one million, five hundred two thousand, one hundred forty-five".