1730140381 has 2 divisors, whose sum is σ = 1730140382. Its totient is φ = 1730140380.

The previous prime is 1730140343. The next prime is 1730140421. The reversal of 1730140381 is 1830410371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1086757156 + 643383225 = 32966^2 + 25365^2 .

It is a cyclic number.

It is not a de Polignac number, because 1730140381 - 2⁷ = 1730140253 is a prime.

It is a super-2 number, since 2×1730140381² = 5986771475933650322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1730440381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 865070190 + 865070191.

It is an arithmetic number, because the mean of its divisors is an integer number (865070191).

Almost surely, 2^1730140381 is an apocalyptic number.

It is an amenable number.

1730140381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1730140381 is an equidigital number, since it uses as much as digits as its factorization.

1730140381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 1730140381 is about 41594.9561966352. The cubic root of 1730140381 is about 1200.4952541395.

The spelling of 1730140381 in words is "one billion, seven hundred thirty million, one hundred forty thousand, three hundred eighty-one".