1973105137 has 2 divisors, whose sum is σ = 1973105138. Its totient is φ = 1973105136.

The previous prime is 1973105107. The next prime is 1973105159. The reversal of 1973105137 is 7315013791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1110155761 + 862949376 = 33319^2 + 29376^2 .

It is a cyclic number.

It is not a de Polignac number, because 1973105137 - 2¹⁵ = 1973072369 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1973105096 and 1973105105.

It is not a weakly prime, because it can be changed into another prime (1973105107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986552568 + 986552569.

It is an arithmetic number, because the mean of its divisors is an integer number (986552569).

Almost surely, 2^1973105137 is an apocalyptic number.

It is an amenable number.

1973105137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973105137 is an equidigital number, since it uses as much as digits as its factorization.

1973105137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19845, while the sum is 37.

The square root of 1973105137 is about 44419.6480963098. The cubic root of 1973105137 is about 1254.2479766290.

The spelling of 1973105137 in words is "one billion, nine hundred seventy-three million, one hundred five thousand, one hundred thirty-seven".