749081506 has 16 divisors (see below), whose sum is σ = 1196850816. Its totient is φ = 350395456.

The previous prime is 749081491. The next prime is 749081519. The reversal of 749081506 is 605180947.

It is a super-2 number, since 2×749081506² = 1122246205262456072, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60286 + ... + 71641.

It is an arithmetic number, because the mean of its divisors is an integer number (74803176).

Almost surely, 2^749081506 is an apocalyptic number.

749081506 is a deficient number, since it is larger than the sum of its proper divisors (447769310).

749081506 is a wasteful number, since it uses less digits than its factorization.

749081506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132113.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 749081506 is about 27369.3534085115. The cubic root of 749081506 is about 908.1892528272.

The spelling of 749081506 in words is "seven hundred forty-nine million, eighty-one thousand, five hundred six".