745916491 has 8 divisors (see below), whose sum is σ = 750081024. Its totient is φ = 741759720.

The previous prime is 745916471. The next prime is 745916537. The reversal of 745916491 is 194619547.

745916491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-745916491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (745916471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 402930 + ... + 404776.

It is an arithmetic number, because the mean of its divisors is an integer number (93760128).

Almost surely, 2^745916491 is an apocalyptic number.

745916491 is a deficient number, since it is larger than the sum of its proper divisors (4164533).

745916491 is a wasteful number, since it uses less digits than its factorization.

745916491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881.

The product of its digits is 272160, while the sum is 46.

The square root of 745916491 is about 27311.4717838494. The cubic root of 745916491 is about 906.9083550610.

The spelling of 745916491 in words is "seven hundred forty-five million, nine hundred sixteen thousand, four hundred ninety-one".