1903160961593 has 2 divisors, whose sum is σ = 1903160961594. Its totient is φ = 1903160961592.

The previous prime is 1903160961589. The next prime is 1903160961607. The reversal of 1903160961593 is 3951690613091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1456204533289 + 446956428304 = 1206733^2 + 668548^2 .

It is a cyclic number.

It is not a de Polignac number, because 1903160961593 - 2² = 1903160961589 is a prime.

It is not a weakly prime, because it can be changed into another prime (1903160961293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 951580480796 + 951580480797.

It is an arithmetic number, because the mean of its divisors is an integer number (951580480797).

Almost surely, 2^{1903160961593} is an apocalyptic number.

It is an amenable number.

1903160961593 is a deficient number, since it is larger than the sum of its proper divisors (1).

1903160961593 is an equidigital number, since it uses as much as digits as its factorization.

1903160961593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1180980, while the sum is 53.

The spelling of 1903160961593 in words is "one trillion, nine hundred three billion, one hundred sixty million, nine hundred sixty-one thousand, five hundred ninety-three".