7461645109 has 2 divisors, whose sum is σ = 7461645110. Its totient is φ = 7461645108.

The previous prime is 7461645089. The next prime is 7461645127. The reversal of 7461645109 is 9015461647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7449416100 + 12229009 = 86310^2 + 3497^2 .

It is an emirp because it is prime and its reverse (9015461647) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7461645109 - 2⁵ = 7461645077 is a prime.

It is a super-2 number, since 2×7461645109² (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 (7461645199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3730822554 + 3730822555.

It is an arithmetic number, because the mean of its divisors is an integer number (3730822555).

Almost surely, 2^7461645109 is an apocalyptic number.

It is an amenable number.

7461645109 is a deficient number, since it is larger than the sum of its proper divisors (1).

7461645109 is an equidigital number, since it uses as much as digits as its factorization.

7461645109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 7461645109 is about 86380.8144728909. The cubic root of 7461645109 is about 1954.0913536133.

The spelling of 7461645109 in words is "seven billion, four hundred sixty-one million, six hundred forty-five thousand, one hundred nine".