37440881 has 2 divisors, whose sum is σ = 37440882. Its totient is φ = 37440880.

The previous prime is 37440877. The next prime is 37440959. The reversal of 37440881 is 18804473.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22886656 + 14554225 = 4784^2 + 3815^2 .

It is a cyclic number.

It is not a de Polignac number, because 37440881 - 2² = 37440877 is a prime.

It is a super-2 number, since 2×37440881² = 2803639140112322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (37440841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18720440 + 18720441.

It is an arithmetic number, because the mean of its divisors is an integer number (18720441).

Almost surely, 2^37440881 is an apocalyptic number.

It is an amenable number.

37440881 is a deficient number, since it is larger than the sum of its proper divisors (1).

37440881 is an equidigital number, since it uses as much as digits as its factorization.

37440881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 37440881 is about 6118.8954068524. The cubic root of 37440881 is about 334.5404882758.

The spelling of 37440881 in words is "thirty-seven million, four hundred forty thousand, eight hundred eighty-one".