381818607339 has 32 divisors (see below), whose sum is σ = 567282946048. Its totient is φ = 226845360000.

The previous prime is 381818607337. The next prime is 381818607349. The reversal of 381818607339 is 933706818183.

It is not a de Polignac number, because 381818607339 - 2¹ = 381818607337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (381818607337) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 133914 + ... + 884064.

It is an arithmetic number, because the mean of its divisors is an integer number (17727592064).

Almost surely, 2^381818607339 is an apocalyptic number.

381818607339 is a gapful number since it is divisible by the number (39) formed by its first and last digit.

381818607339 is a deficient number, since it is larger than the sum of its proper divisors (185464338709).

381818607339 is a wasteful number, since it uses less digits than its factorization.

381818607339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750619.

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 381818607339 in words is "three hundred eighty-one billion, eight hundred eighteen million, six hundred seven thousand, three hundred thirty-nine".