1957227378593 has 2 divisors, whose sum is σ = 1957227378594. Its totient is φ = 1957227378592.

The previous prime is 1957227378563. The next prime is 1957227378683. The reversal of 1957227378593 is 3958737227591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1099041915904 + 858185462689 = 1048352^2 + 926383^2 .

It is a cyclic number.

It is not a de Polignac number, because 1957227378593 - 2¹² = 1957227374497 is a prime.

It is not a weakly prime, because it can be changed into another prime (1957227378503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 978613689296 + 978613689297.

It is an arithmetic number, because the mean of its divisors is an integer number (978613689297).

Almost surely, 2^{1957227378593} is an apocalyptic number.

It is an amenable number.

1957227378593 is a deficient number, since it is larger than the sum of its proper divisors (1).

1957227378593 is an equidigital number, since it uses as much as digits as its factorization.

1957227378593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 200037600, while the sum is 68.

The spelling of 1957227378593 in words is "one trillion, nine hundred fifty-seven billion, two hundred twenty-seven million, three hundred seventy-eight thousand, five hundred ninety-three".