380139673 has 2 divisors, whose sum is σ = 380139674. Its totient is φ = 380139672.

The previous prime is 380139637. The next prime is 380139679. The reversal of 380139673 is 376931083.

Together with previous prime (380139637) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 320123664 + 60016009 = 17892^2 + 7747^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380139673 is a prime.

It is not a weakly prime, because it can be changed into another prime (380139679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190069836 + 190069837.

It is an arithmetic number, because the mean of its divisors is an integer number (190069837).

Almost surely, 2^380139673 is an apocalyptic number.

It is an amenable number.

380139673 is a deficient number, since it is larger than the sum of its proper divisors (1).

380139673 is an equidigital number, since it uses as much as digits as its factorization.

380139673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 40.

The square root of 380139673 is about 19497.1708973379. The cubic root of 380139673 is about 724.4043767534.

The spelling of 380139673 in words is "three hundred eighty million, one hundred thirty-nine thousand, six hundred seventy-three".