1953746722973 has 2 divisors, whose sum is σ = 1953746722974. Its totient is φ = 1953746722972.

The previous prime is 1953746722931. The next prime is 1953746722997. The reversal of 1953746722973 is 3792276473591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1175051664004 + 778695058969 = 1083998^2 + 882437^2 .

It is an emirp because it is prime and its reverse (3792276473591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1953746722973 - 2⁶ = 1953746722909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1953746722903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 976873361486 + 976873361487.

It is an arithmetic number, because the mean of its divisors is an integer number (976873361487).

Almost surely, 2^{1953746722973} is an apocalyptic number.

It is an amenable number.

1953746722973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1953746722973 is an equidigital number, since it uses as much as digits as its factorization.

1953746722973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120022560, while the sum is 65.

The spelling of 1953746722973 in words is "one trillion, nine hundred fifty-three billion, seven hundred forty-six million, seven hundred twenty-two thousand, nine hundred seventy-three".