7532618981 has 2 divisors, whose sum is σ = 7532618982. Its totient is φ = 7532618980.

The previous prime is 7532618971. The next prime is 7532619013. The reversal of 7532618981 is 1898162357.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5222374756 + 2310244225 = 72266^2 + 48065^2 .

It is a cyclic number.

It is not a de Polignac number, because 7532618981 - 2²² = 7528424677 is a prime.

It is a super-2 number, since 2×7532618981² (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 (7532618911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3766309490 + 3766309491.

It is an arithmetic number, because the mean of its divisors is an integer number (3766309491).

Almost surely, 2^7532618981 is an apocalyptic number.

It is an amenable number.

7532618981 is a deficient number, since it is larger than the sum of its proper divisors (1).

7532618981 is an equidigital number, since it uses as much as digits as its factorization.

7532618981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 50.

The square root of 7532618981 is about 86790.6618306371. The cubic root of 7532618981 is about 1960.2674719143.

The spelling of 7532618981 in words is "seven billion, five hundred thirty-two million, six hundred eighteen thousand, nine hundred eighty-one".