38691803 has 2 divisors, whose sum is σ = 38691804. Its totient is φ = 38691802.

The previous prime is 38691791. The next prime is 38691811. The reversal of 38691803 is 30819683.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38691803 - 2¹⁴ = 38675419 is a prime.

It is not a weakly prime, because it can be changed into another prime (38691853) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19345901 + 19345902.

It is an arithmetic number, because the mean of its divisors is an integer number (19345902).

Almost surely, 2^38691803 is an apocalyptic number.

38691803 is a deficient number, since it is larger than the sum of its proper divisors (1).

38691803 is an equidigital number, since it uses as much as digits as its factorization.

38691803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 38.

The square root of 38691803 is about 6220.2735470396. The cubic root of 38691803 is about 338.2254806532.

The spelling of 38691803 in words is "thirty-eight million, six hundred ninety-one thousand, eight hundred three".