749945045 has 18 divisors (see below), whose sum is σ = 927716706. Its totient is φ = 581977440.

The previous prime is 749945039. The next prime is 749945059. The reversal of 749945045 is 540549947.

It can be written as a sum of positive squares in 3 ways, for example, as 368563204 + 381381841 = 19198^2 + 19529^2 .

It is not a de Polignac number, because 749945045 - 2¹⁰ = 749944021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2265530 + ... + 2265860.

It is an arithmetic number, because the mean of its divisors is an integer number (51539817).

Almost surely, 2^749945045 is an apocalyptic number.

It is an amenable number.

749945045 is a deficient number, since it is larger than the sum of its proper divisors (177771661).

749945045 is an frugal number, since it uses more digits than its factorization.

749945045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 373 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 47.

The square root of 749945045 is about 27385.1245204399. The cubic root of 749945045 is about 908.5381047936.

The spelling of 749945045 in words is "seven hundred forty-nine million, nine hundred forty-five thousand, forty-five".