674819381 has 2 divisors, whose sum is σ = 674819382. Its totient is φ = 674819380.

The previous prime is 674819359. The next prime is 674819413. The reversal of 674819381 is 183918476.

674819381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 670551025 + 4268356 = 25895^2 + 2066^2 .

It is a cyclic number.

It is not a de Polignac number, because 674819381 - 2⁶ = 674819317 is a prime.

It is a super-2 number, since 2×674819381² = 910762393946446322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (674819281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 337409690 + 337409691.

It is an arithmetic number, because the mean of its divisors is an integer number (337409691).

Almost surely, 2^674819381 is an apocalyptic number.

It is an amenable number.

674819381 is a deficient number, since it is larger than the sum of its proper divisors (1).

674819381 is an equidigital number, since it uses as much as digits as its factorization.

674819381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 47.

The square root of 674819381 is about 25977.2858666952. The cubic root of 674819381 is about 877.1270725345.

The spelling of 674819381 in words is "six hundred seventy-four million, eight hundred nineteen thousand, three hundred eighty-one".