37130881 has 2 divisors, whose sum is σ = 37130882. Its totient is φ = 37130880.

The previous prime is 37130879. The next prime is 37130897. The reversal of 37130881 is 18803173.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36663025 + 467856 = 6055^2 + 684^2 .

It is a cyclic number.

It is not a de Polignac number, because 37130881 - 2¹ = 37130879 is a prime.

It is a super-2 number, since 2×37130881² = 2757404647672322, which contains 22 as substring.

Together with 37130879, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (37130831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18565440 + 18565441.

It is an arithmetic number, because the mean of its divisors is an integer number (18565441).

Almost surely, 2^37130881 is an apocalyptic number.

It is an amenable number.

37130881 is a deficient number, since it is larger than the sum of its proper divisors (1).

37130881 is an equidigital number, since it uses as much as digits as its factorization.

37130881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 37130881 is about 6093.5113850718. The cubic root of 37130881 is about 333.6146277758.

The spelling of 37130881 in words is "thirty-seven million, one hundred thirty thousand, eight hundred eighty-one".