361473821 has 2 divisors, whose sum is σ = 361473822. Its totient is φ = 361473820.

The previous prime is 361473811. The next prime is 361473863. The reversal of 361473821 is 128374163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 342768196 + 18705625 = 18514^2 + 4325^2 .

It is a cyclic number.

It is not a de Polignac number, because 361473821 - 2²⁶ = 294364957 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (361473811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180736910 + 180736911.

It is an arithmetic number, because the mean of its divisors is an integer number (180736911).

Almost surely, 2^361473821 is an apocalyptic number.

It is an amenable number.

361473821 is a deficient number, since it is larger than the sum of its proper divisors (1).

361473821 is an equidigital number, since it uses as much as digits as its factorization.

361473821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24192, while the sum is 35.

The square root of 361473821 is about 19012.4648849117. The cubic root of 361473821 is about 712.3481213567.

The spelling of 361473821 in words is "three hundred sixty-one million, four hundred seventy-three thousand, eight hundred twenty-one".