37428109 has 2 divisors, whose sum is σ = 37428110. Its totient is φ = 37428108.

The previous prime is 37428091. The next prime is 37428151. The reversal of 37428109 is 90182473.

Together with previous prime (37428091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35964009 + 1464100 = 5997^2 + 1210^2 .

It is an emirp because it is prime and its reverse (90182473) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37428109 - 2⁵ = 37428077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37428179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18714054 + 18714055.

It is an arithmetic number, because the mean of its divisors is an integer number (18714055).

Almost surely, 2^37428109 is an apocalyptic number.

It is an amenable number.

37428109 is a deficient number, since it is larger than the sum of its proper divisors (1).

37428109 is an equidigital number, since it uses as much as digits as its factorization.

37428109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 37428109 is about 6117.8516654133. The cubic root of 37428109 is about 334.5024439693.

The spelling of 37428109 in words is "thirty-seven million, four hundred twenty-eight thousand, one hundred nine".