3378803921 has 4 divisors (see below), whose sum is σ = 3416768100. Its totient is φ = 3340839744.

The previous prime is 3378803899. The next prime is 3378803927. The reversal of 3378803921 is 1293088733.

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 425968321 + 2952835600 = 20639^2 + 54340^2 .

It is a cyclic number.

It is not a de Polignac number, because 3378803921 - 2¹⁰ = 3378802897 is a prime.

It is a super-2 number, since 2×3378803921² = 22832631873129948482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3378803927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18981956 + ... + 18982133.

It is an arithmetic number, because the mean of its divisors is an integer number (854192025).

Almost surely, 2^3378803921 is an apocalyptic number.

It is an amenable number.

3378803921 is a deficient number, since it is larger than the sum of its proper divisors (37964179).

3378803921 is an equidigital number, since it uses as much as digits as its factorization.

3378803921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37964178.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 3378803921 is about 58127.4799126885. The cubic root of 3378803921 is about 1500.5633322632.

The spelling of 3378803921 in words is "three billion, three hundred seventy-eight million, eight hundred three thousand, nine hundred twenty-one".