1010781011 has 2 divisors, whose sum is σ = 1010781012. Its totient is φ = 1010781010.

The previous prime is 1010781001. The next prime is 1010781029. The reversal of 1010781011 is 1101870101.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1010781011 is a prime.

It is not a weakly prime, because it can be changed into another prime (1010781001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505390505 + 505390506.

It is an arithmetic number, because the mean of its divisors is an integer number (505390506).

Almost surely, 2^1010781011 is an apocalyptic number.

1010781011 is a deficient number, since it is larger than the sum of its proper divisors (1).

1010781011 is an equidigital number, since it uses as much as digits as its factorization.

1010781011 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56, while the sum is 20.

The square root of 1010781011 is about 31792.7823727336. The cubic root of 1010781011 is about 1003.5808326658.

The spelling of 1010781011 in words is "one billion, ten million, seven hundred eighty-one thousand, eleven".