745152181 has 2 divisors, whose sum is σ = 745152182. Its totient is φ = 745152180.

The previous prime is 745152167. The next prime is 745152217. The reversal of 745152181 is 181251547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 674440900 + 70711281 = 25970^2 + 8409^2 .

It is an emirp because it is prime and its reverse (181251547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745152181 - 2⁹ = 745151669 is a prime.

It is a super-2 number, since 2×745152181² = 1110503545698113522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745152101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372576090 + 372576091.

It is an arithmetic number, because the mean of its divisors is an integer number (372576091).

Almost surely, 2^745152181 is an apocalyptic number.

It is an amenable number.

745152181 is a deficient number, since it is larger than the sum of its proper divisors (1).

745152181 is an equidigital number, since it uses as much as digits as its factorization.

745152181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11200, while the sum is 34.

The square root of 745152181 is about 27297.4757257883. The cubic root of 745152181 is about 906.5984919513.

The spelling of 745152181 in words is "seven hundred forty-five million, one hundred fifty-two thousand, one hundred eighty-one".