380629277921 has 2 divisors, whose sum is σ = 380629277922. Its totient is φ = 380629277920.

The previous prime is 380629277879. The next prime is 380629277923. The reversal of 380629277921 is 129772926083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 353179415521 + 27449862400 = 594289^2 + 165680^2 .

It is a cyclic number.

It is not a de Polignac number, because 380629277921 - 2¹⁰ = 380629276897 is a prime.

Together with 380629277923, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (380629277923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190314638960 + 190314638961.

It is an arithmetic number, because the mean of its divisors is an integer number (190314638961).

Almost surely, 2^380629277921 is an apocalyptic number.

It is an amenable number.

380629277921 is a deficient number, since it is larger than the sum of its proper divisors (1).

380629277921 is an equidigital number, since it uses as much as digits as its factorization.

380629277921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4572288, while the sum is 56.

The spelling of 380629277921 in words is "three hundred eighty billion, six hundred twenty-nine million, two hundred seventy-seven thousand, nine hundred twenty-one".