749305545 has 16 divisors (see below), whose sum is σ = 1228131072. Its totient is φ = 389882240.

The previous prime is 749305541. The next prime is 749305547. The reversal of 749305545 is 545503947.

It is not a de Polignac number, because 749305545 - 2² = 749305541 is a prime.

It is a super-2 number, since 2×749305545² = 1122917599535494050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 749305497 and 749305506.

It is not an unprimeable number, because it can be changed into a prime (749305541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 608577 + ... + 609806.

It is an arithmetic number, because the mean of its divisors is an integer number (76758192).

Almost surely, 2^749305545 is an apocalyptic number.

It is an amenable number.

749305545 is a deficient number, since it is larger than the sum of its proper divisors (478825527).

749305545 is a wasteful number, since it uses less digits than its factorization.

749305545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1218432.

The product of its (nonzero) digits is 378000, while the sum is 42.

The square root of 749305545 is about 27373.4459832883. The cubic root of 749305545 is about 908.2797857126.

The spelling of 749305545 in words is "seven hundred forty-nine million, three hundred five thousand, five hundred forty-five".