7480335781 has 2 divisors, whose sum is σ = 7480335782. Its totient is φ = 7480335780.

The previous prime is 7480335761. The next prime is 7480335787. The reversal of 7480335781 is 1875330847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7147857025 + 332478756 = 84545^2 + 18234^2 .

It is a cyclic number.

It is not a de Polignac number, because 7480335781 - 2¹⁵ = 7480303013 is a prime.

It is a super-2 number, since 2×7480335781² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7480335787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3740167890 + 3740167891.

It is an arithmetic number, because the mean of its divisors is an integer number (3740167891).

Almost surely, 2^7480335781 is an apocalyptic number.

It is an amenable number.

7480335781 is a deficient number, since it is larger than the sum of its proper divisors (1).

7480335781 is an equidigital number, since it uses as much as digits as its factorization.

7480335781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 564480, while the sum is 46.

The square root of 7480335781 is about 86488.9344425054. The cubic root of 7480335781 is about 1955.7215940704.

The spelling of 7480335781 in words is "seven billion, four hundred eighty million, three hundred thirty-five thousand, seven hundred eighty-one".