745786388 has 12 divisors (see below), whose sum is σ = 1350130740. Its totient is φ = 360034752.

The previous prime is 745786381. The next prime is 745786399. The reversal of 745786388 is 883687547.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 556393744 + 189392644 = 23588^2 + 13762^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745786381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3214481 + ... + 3214712.

It is an arithmetic number, because the mean of its divisors is an integer number (112510895).

Almost surely, 2^745786388 is an apocalyptic number.

It is an amenable number.

745786388 is a deficient number, since it is larger than the sum of its proper divisors (604344352).

745786388 is a wasteful number, since it uses less digits than its factorization.

745786388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6429226 (or 6429224 counting only the distinct ones).

The product of its digits is 9031680, while the sum is 56.

The square root of 745786388 is about 27309.0898420288. The cubic root of 745786388 is about 906.8556242438.

The spelling of 745786388 in words is "seven hundred forty-five million, seven hundred eighty-six thousand, three hundred eighty-eight".