38420819 has 2 divisors, whose sum is σ = 38420820. Its totient is φ = 38420818.

The previous prime is 38420807. The next prime is 38420839. The reversal of 38420819 is 91802483.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 38420819 - 2⁴ = 38420803 is a prime.

It is a super-2 number, since 2×38420819² = 2952318665261522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38420839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19210409 + 19210410.

It is an arithmetic number, because the mean of its divisors is an integer number (19210410).

Almost surely, 2^38420819 is an apocalyptic number.

38420819 is a deficient number, since it is larger than the sum of its proper divisors (1).

38420819 is an equidigital number, since it uses as much as digits as its factorization.

38420819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 38420819 is about 6198.4529521486. The cubic root of 38420819 is about 337.4340253300.

The spelling of 38420819 in words is "thirty-eight million, four hundred twenty thousand, eight hundred nineteen".