718396380 has 144 divisors (see below), whose sum is σ = 2356308864. Its totient is φ = 176117760.

The previous prime is 718396369. The next prime is 718396391. The reversal of 718396380 is 83693817.

It is a happy number.

718396380 is a `hidden beast` number, since 7 + 1 + 8 + 3 + 9 + 638 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (718396369) and next prime (718396391).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 788125 + ... + 789035.

It is an arithmetic number, because the mean of its divisors is an integer number (16363256).

Almost surely, 2^718396380 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 718396380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1178154432).

718396380 is an abundant number, since it is smaller than the sum of its proper divisors (1637912484).

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

718396380 is a wasteful number, since it uses less digits than its factorization.

718396380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1276 (or 1271 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 718396380 is about 26802.9173785243. The cubic root of 718396380 is about 895.6150407701.

The spelling of 718396380 in words is "seven hundred eighteen million, three hundred ninety-six thousand, three hundred eighty".