3213778941 has 6 divisors (see below), whose sum is σ = 4642125150. Its totient is φ = 2142519288.

The previous prime is 3213778913. The next prime is 3213778949. The reversal of 3213778941 is 1498773123.

It can be written as a sum of positive squares in only one way, i.e., 1923173316 + 1290605625 = 43854^2 + 35925^2 .

It is not a de Polignac number, because 3213778941 - 2⁹ = 3213778429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3213778949) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 178543266 + ... + 178543283.

It is an arithmetic number, because the mean of its divisors is an integer number (773687525).

Almost surely, 2^3213778941 is an apocalyptic number.

It is an amenable number.

3213778941 is a deficient number, since it is larger than the sum of its proper divisors (1428346209).

3213778941 is a wasteful number, since it uses less digits than its factorization.

3213778941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 357086555 (or 357086552 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 3213778941 is about 56690.2014549252. The cubic root of 3213778941 is about 1475.7246564294.

The spelling of 3213778941 in words is "three billion, two hundred thirteen million, seven hundred seventy-eight thousand, nine hundred forty-one".