38781011 has 2 divisors, whose sum is σ = 38781012. Its totient is φ = 38781010.

The previous prime is 38780947. The next prime is 38781037. The reversal of 38781011 is 11018783.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 38781011 - 2⁶ = 38780947 is a prime.

It is not a weakly prime, because it can be changed into another prime (38781311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19390505 + 19390506.

It is an arithmetic number, because the mean of its divisors is an integer number (19390506).

Almost surely, 2^38781011 is an apocalyptic number.

38781011 is a deficient number, since it is larger than the sum of its proper divisors (1).

38781011 is an equidigital number, since it uses as much as digits as its factorization.

38781011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 29.

The square root of 38781011 is about 6227.4401643051. The cubic root of 38781011 is about 338.4852192149.

Adding to 38781011 its reverse (11018783), we get a palindrome (49799794).

The spelling of 38781011 in words is "thirty-eight million, seven hundred eighty-one thousand, eleven".