1951734057673 has 2 divisors, whose sum is σ = 1951734057674. Its totient is φ = 1951734057672.

The previous prime is 1951734057499. The next prime is 1951734057677. The reversal of 1951734057673 is 3767504371591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1712112059529 + 239621998144 = 1308477^2 + 489512^2 .

It is a cyclic number.

It is not a de Polignac number, because 1951734057673 - 2²⁹ = 1951197186761 is a prime.

It is not a weakly prime, because it can be changed into another prime (1951734057677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 975867028836 + 975867028837.

It is an arithmetic number, because the mean of its divisors is an integer number (975867028837).

Almost surely, 2^{1951734057673} is an apocalyptic number.

It is an amenable number.

1951734057673 is a deficient number, since it is larger than the sum of its proper divisors (1).

1951734057673 is an equidigital number, since it uses as much as digits as its factorization.

1951734057673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16669800, while the sum is 58.

The spelling of 1951734057673 in words is "one trillion, nine hundred fifty-one billion, seven hundred thirty-four million, fifty-seven thousand, six hundred seventy-three".