381075784501 has 2 divisors, whose sum is σ = 381075784502. Its totient is φ = 381075784500.

The previous prime is 381075784493. The next prime is 381075784511. The reversal of 381075784501 is 105487570183.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 380135135601 + 940648900 = 616551^2 + 30670^2 .

It is a cyclic number.

It is not a de Polignac number, because 381075784501 - 2³ = 381075784493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381075784511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190537892250 + 190537892251.

It is an arithmetic number, because the mean of its divisors is an integer number (190537892251).

Almost surely, 2^381075784501 is an apocalyptic number.

It is an amenable number.

381075784501 is a deficient number, since it is larger than the sum of its proper divisors (1).

381075784501 is an equidigital number, since it uses as much as digits as its factorization.

381075784501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 940800, while the sum is 49.

The spelling of 381075784501 in words is "three hundred eighty-one billion, seventy-five million, seven hundred eighty-four thousand, five hundred one".