749671978 has 24 divisors (see below), whose sum is σ = 1245482784. Its totient is φ = 335629800.

The previous prime is 749671957. The next prime is 749671981. The reversal of 749671978 is 879176947.

749671978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 94963 + ... + 102553.

It is an arithmetic number, because the mean of its divisors is an integer number (51895116).

Almost surely, 2^749671978 is an apocalyptic number.

749671978 is a deficient number, since it is larger than the sum of its proper divisors (495810806).

749671978 is a wasteful number, since it uses less digits than its factorization.

749671978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7738 (or 7671 counting only the distinct ones).

The product of its digits is 5334336, while the sum is 58.

The square root of 749671978 is about 27380.1383853333. The cubic root of 749671978 is about 908.4278203161.

The spelling of 749671978 in words is "seven hundred forty-nine million, six hundred seventy-one thousand, nine hundred seventy-eight".