743316138 has 48 divisors (see below), whose sum is σ = 1702864800. Its totient is φ = 233681760.

The previous prime is 743316137. The next prime is 743316187. The reversal of 743316138 is 831613347.

743316138 is a `hidden beast` number, since 7 + 4 + 3 + 31 + 613 + 8 = 666.

It is a super-2 number, since 2×743316138² = 1105037762022470088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (743316131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 73573 + ... + 83063.

It is an arithmetic number, because the mean of its divisors is an integer number (35476350).

Almost surely, 2^743316138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 743316138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (851432400).

743316138 is an abundant number, since it is smaller than the sum of its proper divisors (959548662).

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

743316138 is a wasteful number, since it uses less digits than its factorization.

743316138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9747 (or 9744 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 743316138 is about 27263.8247133450. The cubic root of 743316138 is about 905.8532648346.

The spelling of 743316138 in words is "seven hundred forty-three million, three hundred sixteen thousand, one hundred thirty-eight".