361958391857 has 2 divisors, whose sum is σ = 361958391858. Its totient is φ = 361958391856.

The previous prime is 361958391827. The next prime is 361958391877. The reversal of 361958391857 is 758193859163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 358598566561 + 3359825296 = 598831^2 + 57964^2 .

It is a cyclic number.

It is not a de Polignac number, because 361958391857 - 2¹⁶ = 361958326321 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 361958391793 and 361958391802.

It is not a weakly prime, because it can be changed into another prime (361958391827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180979195928 + 180979195929.

It is an arithmetic number, because the mean of its divisors is an integer number (180979195929).

Almost surely, 2^361958391857 is an apocalyptic number.

It is an amenable number.

361958391857 is a deficient number, since it is larger than the sum of its proper divisors (1).

361958391857 is an equidigital number, since it uses as much as digits as its factorization.

361958391857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48988800, while the sum is 65.

The spelling of 361958391857 in words is "three hundred sixty-one billion, nine hundred fifty-eight million, three hundred ninety-one thousand, eight hundred fifty-seven".