745618926989 has 2 divisors, whose sum is σ = 745618926990. Its totient is φ = 745618926988.

The previous prime is 745618926979. The next prime is 745618927003. The reversal of 745618926989 is 989629816547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 732265275625 + 13353651364 = 855725^2 + 115558^2 .

It is a cyclic number.

It is not a de Polignac number, because 745618926989 - 2¹⁶ = 745618861453 is a prime.

It is a super-2 number, since 2×745618926989² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745618926979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372809463494 + 372809463495.

It is an arithmetic number, because the mean of its divisors is an integer number (372809463495).

Almost surely, 2^745618926989 is an apocalyptic number.

It is an amenable number.

745618926989 is a deficient number, since it is larger than the sum of its proper divisors (1).

745618926989 is an equidigital number, since it uses as much as digits as its factorization.

745618926989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470292480, while the sum is 74.

The spelling of 745618926989 in words is "seven hundred forty-five billion, six hundred eighteen million, nine hundred twenty-six thousand, nine hundred eighty-nine".