743642338 has 16 divisors (see below), whose sum is σ = 1161410040. Its totient is φ = 356803200.

The previous prime is 743642321. The next prime is 743642359. The reversal of 743642338 is 833246347.

It can be written as a sum of positive squares in 4 ways, for example, as 267224409 + 476417929 = 16347^2 + 21827^2 .

It is a super-2 number, since 2×743642338² = 1106007853732212488, 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 743642338.

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, 69333 + ... + 79336.

Almost surely, 2^743642338 is an apocalyptic number.

743642338 is a deficient number, since it is larger than the sum of its proper divisors (417767702).

743642338 is a wasteful number, since it uses less digits than its factorization.

743642338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148773.

The product of its digits is 290304, while the sum is 40.

The square root of 743642338 is about 27269.8063432801. The cubic root of 743642338 is about 905.9857549492.

The spelling of 743642338 in words is "seven hundred forty-three million, six hundred forty-two thousand, three hundred thirty-eight".