1011004781 has 2 divisors, whose sum is σ = 1011004782. Its totient is φ = 1011004780.

The previous prime is 1011004751. The next prime is 1011004793. The reversal of 1011004781 is 1874001101.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 560079556 + 450925225 = 23666^2 + 21235^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011004781 - 2¹⁴ = 1010988397 is a prime.

It is a super-2 number, since 2×1011004781² = 2044261334409715922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1011004751) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 505502390 + 505502391.

It is an arithmetic number, because the mean of its divisors is an integer number (505502391).

Almost surely, 2^1011004781 is an apocalyptic number.

It is an amenable number.

1011004781 is a deficient number, since it is larger than the sum of its proper divisors (1).

1011004781 is an equidigital number, since it uses as much as digits as its factorization.

1011004781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 224, while the sum is 23.

The square root of 1011004781 is about 31796.3013729585. The cubic root of 1011004781 is about 1003.6548858684.

Adding to 1011004781 its reverse (1874001101), we get a palindrome (2885005882).

The spelling of 1011004781 in words is "one billion, eleven million, four thousand, seven hundred eighty-one".