37981799 has 2 divisors, whose sum is σ = 37981800. Its totient is φ = 37981798.

The previous prime is 37981777. The next prime is 37981807. The reversal of 37981799 is 99718973.

37981799 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 37981799 - 2⁸ = 37981543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 37981799.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (37981709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18990899 + 18990900.

It is an arithmetic number, because the mean of its divisors is an integer number (18990900).

Almost surely, 2^37981799 is an apocalyptic number.

37981799 is a deficient number, since it is larger than the sum of its proper divisors (1).

37981799 is an equidigital number, since it uses as much as digits as its factorization.

37981799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 857304, while the sum is 53.

The square root of 37981799 is about 6162.9375301069. The cubic root of 37981799 is about 336.1438555162.

The spelling of 37981799 in words is "thirty-seven million, nine hundred eighty-one thousand, seven hundred ninety-nine".