2136973 has 2 divisors, whose sum is σ = 2136974. Its totient is φ = 2136972.

The previous prime is 2136919. The next prime is 2136977. The reversal of 2136973 is 3796312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1671849 + 465124 = 1293^2 + 682^2 .

It is a cyclic number.

It is not a de Polignac number, because 2136973 - 2¹³ = 2128781 is a prime.

2136973 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2136977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1068486 + 1068487.

It is an arithmetic number, because the mean of its divisors is an integer number (1068487).

2^2136973 is an apocalyptic number.

It is an amenable number.

2136973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2136973 is an equidigital number, since it uses as much as digits as its factorization.

2136973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6804, while the sum is 31.

The square root of 2136973 is about 1461.8389104139. The cubic root of 2136973 is about 128.8050859262.

The spelling of 2136973 in words is "two million, one hundred thirty-six thousand, nine hundred seventy-three".