380945837 has 2 divisors, whose sum is σ = 380945838. Its totient is φ = 380945836.

The previous prime is 380945797. The next prime is 380945879. The reversal of 380945837 is 738549083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 297424516 + 83521321 = 17246^2 + 9139^2 .

It is an emirp because it is prime and its reverse (738549083) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 380945837 - 2¹² = 380941741 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 380945791 and 380945800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380945897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190472918 + 190472919.

It is an arithmetic number, because the mean of its divisors is an integer number (190472919).

Almost surely, 2^380945837 is an apocalyptic number.

It is an amenable number.

380945837 is a deficient number, since it is larger than the sum of its proper divisors (1).

380945837 is an equidigital number, since it uses as much as digits as its factorization.

380945837 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 380945837 is about 19517.8338193561. The cubic root of 380945837 is about 724.9160977817.

The spelling of 380945837 in words is "three hundred eighty million, nine hundred forty-five thousand, eight hundred thirty-seven".