381023729651 has 2 divisors, whose sum is σ = 381023729652. Its totient is φ = 381023729650.

The previous prime is 381023729617. The next prime is 381023729663. The reversal of 381023729651 is 156927320183.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 381023729651 - 2³⁴ = 363843860467 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 381023729596 and 381023729605.

It is not a weakly prime, because it can be changed into another prime (381023729551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190511864825 + 190511864826.

It is an arithmetic number, because the mean of its divisors is an integer number (190511864826).

Almost surely, 2^381023729651 is an apocalyptic number.

381023729651 is a deficient number, since it is larger than the sum of its proper divisors (1).

381023729651 is an equidigital number, since it uses as much as digits as its factorization.

381023729651 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 381023729651 in words is "three hundred eighty-one billion, twenty-three million, seven hundred twenty-nine thousand, six hundred fifty-one".