381426277 has 2 divisors, whose sum is σ = 381426278. Its totient is φ = 381426276.

The previous prime is 381426259. The next prime is 381426289. The reversal of 381426277 is 772624183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 287607681 + 93818596 = 16959^2 + 9686^2 .

It is a cyclic number.

It is not a de Polignac number, because 381426277 - 2¹¹ = 381424229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381486277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190713138 + 190713139.

It is an arithmetic number, because the mean of its divisors is an integer number (190713139).

Almost surely, 2^381426277 is an apocalyptic number.

It is an amenable number.

381426277 is a deficient number, since it is larger than the sum of its proper divisors (1).

381426277 is an equidigital number, since it uses as much as digits as its factorization.

381426277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 112896, while the sum is 40.

The square root of 381426277 is about 19530.1376595251. The cubic root of 381426277 is about 725.2207188459.

The spelling of 381426277 in words is "three hundred eighty-one million, four hundred twenty-six thousand, two hundred seventy-seven".