749318388 has 144 divisors (see below), whose sum is σ = 2227607424. Its totient is φ = 194261760.

The previous prime is 749318369. The next prime is 749318389. The reversal of 749318388 is 883813947.

749318388 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×749318388² = 1122956093189837088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 749318388.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749318389) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 465481 + ... + 467087.

It is an arithmetic number, because the mean of its divisors is an integer number (15469496).

Almost surely, 2^749318388 is an apocalyptic number.

749318388 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 749318388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1113803712).

749318388 is an abundant number, since it is smaller than the sum of its proper divisors (1478289036).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

749318388 is a wasteful number, since it uses less digits than its factorization.

749318388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1702 (or 1693 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 51.

The square root of 749318388 is about 27373.6805709426. The cubic root of 749318388 is about 908.2849749489.

The spelling of 749318388 in words is "seven hundred forty-nine million, three hundred eighteen thousand, three hundred eighty-eight".