37218061 has 2 divisors, whose sum is σ = 37218062. Its totient is φ = 37218060.

The previous prime is 37218053. The next prime is 37218067. The reversal of 37218061 is 16081273.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37136836 + 81225 = 6094^2 + 285^2 .

It is a cyclic number.

It is not a de Polignac number, because 37218061 - 2³ = 37218053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37218067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18609030 + 18609031.

It is an arithmetic number, because the mean of its divisors is an integer number (18609031).

Almost surely, 2^37218061 is an apocalyptic number.

It is an amenable number.

37218061 is a deficient number, since it is larger than the sum of its proper divisors (1).

37218061 is an equidigital number, since it uses as much as digits as its factorization.

37218061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 37218061 is about 6100.6607019240. The cubic root of 37218061 is about 333.8755228357.

The spelling of 37218061 in words is "thirty-seven million, two hundred eighteen thousand, sixty-one".