38281811 has 2 divisors, whose sum is σ = 38281812. Its totient is φ = 38281810.

The previous prime is 38281777. The next prime is 38281843. The reversal of 38281811 is 11818283.

It is a happy number.

It is an a-pointer prime, because the next prime (38281843) can be obtained adding 38281811 to its sum of digits (32).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38281811 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (38281891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19140905 + 19140906.

It is an arithmetic number, because the mean of its divisors is an integer number (19140906).

Almost surely, 2^38281811 is an apocalyptic number.

38281811 is a deficient number, since it is larger than the sum of its proper divisors (1).

38281811 is an equidigital number, since it uses as much as digits as its factorization.

38281811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3072, while the sum is 32.

The square root of 38281811 is about 6187.2296708624. The cubic root of 38281811 is about 337.0265837964.

The spelling of 38281811 in words is "thirty-eight million, two hundred eighty-one thousand, eight hundred eleven".