37680491 has 2 divisors, whose sum is σ = 37680492. Its totient is φ = 37680490.

The previous prime is 37680479. The next prime is 37680499. The reversal of 37680491 is 19408673.

It is a strong prime.

It is an emirp because it is prime and its reverse (19408673) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 37680491 - 2¹⁸ = 37418347 is a prime.

It is not a weakly prime, because it can be changed into another prime (37680499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18840245 + 18840246.

It is an arithmetic number, because the mean of its divisors is an integer number (18840246).

Almost surely, 2^37680491 is an apocalyptic number.

37680491 is a deficient number, since it is larger than the sum of its proper divisors (1).

37680491 is an equidigital number, since it uses as much as digits as its factorization.

37680491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 37680491 is about 6138.4436952700. The cubic root of 37680491 is about 335.2526229937.

The spelling of 37680491 in words is "thirty-seven million, six hundred eighty thousand, four hundred ninety-one".