37338421 has 2 divisors, whose sum is σ = 37338422. Its totient is φ = 37338420.

The previous prime is 37338397. The next prime is 37338449. The reversal of 37338421 is 12483373.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 19580625 + 17757796 = 4425^2 + 4214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-37338421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37338461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18669210 + 18669211.

It is an arithmetic number, because the mean of its divisors is an integer number (18669211).

Almost surely, 2^37338421 is an apocalyptic number.

It is an amenable number.

37338421 is a deficient number, since it is larger than the sum of its proper divisors (1).

37338421 is an equidigital number, since it uses as much as digits as its factorization.

37338421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 31.

The square root of 37338421 is about 6110.5172448820. The cubic root of 37338421 is about 334.2350437776.

The spelling of 37338421 in words is "thirty-seven million, three hundred thirty-eight thousand, four hundred twenty-one".