1973852137 has 2 divisors, whose sum is σ = 1973852138. Its totient is φ = 1973852136.

The previous prime is 1973852131. The next prime is 1973852149. The reversal of 1973852137 is 7312583791.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1879742736 + 94109401 = 43356^2 + 9701^2 .

It is an emirp because it is prime and its reverse (7312583791) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1973852137 - 2⁷ = 1973852009 is a prime.

It is not a weakly prime, because it can be changed into another prime (1973852131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 986926068 + 986926069.

It is an arithmetic number, because the mean of its divisors is an integer number (986926069).

Almost surely, 2^1973852137 is an apocalyptic number.

It is an amenable number.

1973852137 is a deficient number, since it is larger than the sum of its proper divisors (1).

1973852137 is an equidigital number, since it uses as much as digits as its factorization.

1973852137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 46.

The square root of 1973852137 is about 44428.0557418395. The cubic root of 1973852137 is about 1254.4062390228.

The spelling of 1973852137 in words is "one billion, nine hundred seventy-three million, eight hundred fifty-two thousand, one hundred thirty-seven".