745921218 has 24 divisors (see below), whose sum is σ = 1735409232. Its totient is φ = 213120264.

The previous prime is 745921217. The next prime is 745921219. The reversal of 745921218 is 812129547.

It is an interprime number because it is at equal distance from previous prime (745921217) and next prime (745921219).

It is not an unprimeable number, because it can be changed into a prime (745921213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1268280 + ... + 1268867.

It is an arithmetic number, because the mean of its divisors is an integer number (72308718).

Almost surely, 2^745921218 is an apocalyptic number.

745921218 is an abundant number, since it is smaller than the sum of its proper divisors (989488014).

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

745921218 is a wasteful number, since it uses less digits than its factorization.

745921218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2537166 (or 2537159 counting only the distinct ones).

The product of its digits is 40320, while the sum is 39.

The square root of 745921218 is about 27311.5583224392. The cubic root of 745921218 is about 906.9102708012.

The spelling of 745921218 in words is "seven hundred forty-five million, nine hundred twenty-one thousand, two hundred eighteen".