380906137 has 2 divisors, whose sum is σ = 380906138. Its totient is φ = 380906136.

The previous prime is 380906117. The next prime is 380906219. The reversal of 380906137 is 731609083.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 320983056 + 59923081 = 17916^2 + 7741^2 .

It is a cyclic number.

It is not a de Polignac number, because 380906137 - 2¹¹ = 380904089 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 380906096 and 380906105.

It is not a weakly prime, because it can be changed into another prime (380906117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190453068 + 190453069.

It is an arithmetic number, because the mean of its divisors is an integer number (190453069).

Almost surely, 2^380906137 is an apocalyptic number.

It is an amenable number.

380906137 is a deficient number, since it is larger than the sum of its proper divisors (1).

380906137 is an equidigital number, since it uses as much as digits as its factorization.

380906137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 380906137 is about 19516.8167742591. The cubic root of 380906137 is about 724.8909147013.

The spelling of 380906137 in words is "three hundred eighty million, nine hundred six thousand, one hundred thirty-seven".