745072019218 has 4 divisors (see below), whose sum is σ = 1117608028830. Its totient is φ = 372536009608.

The previous prime is 745072019183. The next prime is 745072019239. The reversal of 745072019218 is 812910270547.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 812910270547 = 195733 ⋅4153159.

It can be written as a sum of positive squares in only one way, i.e., 614550948489 + 130521070729 = 783933^2 + 361277^2 .

It is a super-2 number, since 2×745072019218² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 186268004803 + ... + 186268004806.

Almost surely, 2^745072019218 is an apocalyptic number.

745072019218 is a deficient number, since it is larger than the sum of its proper divisors (372536009612).

745072019218 is a wasteful number, since it uses less digits than its factorization.

745072019218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372536009611.

The product of its (nonzero) digits is 282240, while the sum is 46.

The spelling of 745072019218 in words is "seven hundred forty-five billion, seventy-two million, nineteen thousand, two hundred eighteen".