2137973 has 2 divisors, whose sum is σ = 2137974. Its totient is φ = 2137972.

The previous prime is 2137969. The next prime is 2137979. The reversal of 2137973 is 3797312.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2137444 + 529 = 1462^2 + 23^2 .

It is a cyclic number.

It is not a de Polignac number, because 2137973 - 2² = 2137969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2137979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068986 + 1068987.

It is an arithmetic number, because the mean of its divisors is an integer number (1068987).

2^2137973 is an apocalyptic number.

It is an amenable number.

2137973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2137973 is an equidigital number, since it uses as much as digits as its factorization.

2137973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7938, while the sum is 32.

The square root of 2137973 is about 1462.1809053602. The cubic root of 2137973 is about 128.8251743098.

The spelling of 2137973 in words is "two million, one hundred thirty-seven thousand, nine hundred seventy-three".