745098181 has 4 divisors (see below), whose sum is σ = 748629664. Its totient is φ = 741566700.

The previous prime is 745098143. The next prime is 745098187. The reversal of 745098181 is 181890547.

It is a happy number.

745098181 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 745098181 - 2⁹ = 745097669 is a prime.

It is a super-3 number, since 3×745098181³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745098187) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1765425 + ... + 1765846.

It is an arithmetic number, because the mean of its divisors is an integer number (187157416).

Almost surely, 2^745098181 is an apocalyptic number.

It is an amenable number.

745098181 is a deficient number, since it is larger than the sum of its proper divisors (3531483).

745098181 is a wasteful number, since it uses less digits than its factorization.

745098181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3531482.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 745098181 is about 27296.4866054223. The cubic root of 745098181 is about 906.5765915027.

The spelling of 745098181 in words is "seven hundred forty-five million, ninety-eight thousand, one hundred eighty-one".