3785449021 has 8 divisors (see below), whose sum is σ = 4092378080. Its totient is φ = 3489289488.

The previous prime is 3785449009. The next prime is 3785449033. The reversal of 3785449021 is 1209445873.

It is an interprime number because it is at equal distance from previous prime (3785449009) and next prime (3785449033).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3785449021 - 2¹³ = 3785440829 is a prime.

It is a super-3 number, since 3×3785449021³ (a number of 30 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3785449081) 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 7 ways as a sum of consecutive naturals, for example, 2691651 + ... + 2693056.

It is an arithmetic number, because the mean of its divisors is an integer number (511547260).

Almost surely, 2^3785449021 is an apocalyptic number.

It is an amenable number.

3785449021 is a deficient number, since it is larger than the sum of its proper divisors (306929059).

3785449021 is a wasteful number, since it uses less digits than its factorization.

3785449021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5384763.

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 3785449021 is about 61526.0028036927. The cubic root of 3785449021 is about 1558.4963899372.

The spelling of 3785449021 in words is "three billion, seven hundred eighty-five million, four hundred forty-nine thousand, twenty-one".