718231970 has 8 divisors (see below), whose sum is σ = 1292817564. Its totient is φ = 287292784.

The previous prime is 718231949. The next prime is 718231979. The reversal of 718231970 is 79132817.

It can be written as a sum of positive squares in 2 ways, for example, as 657563449 + 60668521 = 25643^2 + 7789^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (718231979) 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, 35911589 + ... + 35911608.

Almost surely, 2^718231970 is an apocalyptic number.

718231970 is a deficient number, since it is larger than the sum of its proper divisors (574585594).

718231970 is a wasteful number, since it uses less digits than its factorization.

718231970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71823204.

The product of its (nonzero) digits is 21168, while the sum is 38.

The square root of 718231970 is about 26799.8501861484. The cubic root of 718231970 is about 895.5467129837.

The spelling of 718231970 in words is "seven hundred eighteen million, two hundred thirty-one thousand, nine hundred seventy".