718049838 has 64 divisors (see below), whose sum is σ = 1640300544. Its totient is φ = 207564000.

The previous prime is 718049837. The next prime is 718049867. The reversal of 718049838 is 838940817.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (718049833) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 142795 + ... + 147737.

It is an arithmetic number, because the mean of its divisors is an integer number (25629696).

Almost surely, 2^718049838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 718049838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (820150272).

718049838 is an abundant number, since it is smaller than the sum of its proper divisors (922250706).

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

718049838 is a wasteful number, since it uses less digits than its factorization.

718049838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5061.

The product of its (nonzero) digits is 387072, while the sum is 48.

The square root of 718049838 is about 26796.4519666317. The cubic root of 718049838 is about 895.4710078681.

The spelling of 718049838 in words is "seven hundred eighteen million, forty-nine thousand, eight hundred thirty-eight".