1966724018 has 16 divisors (see below), whose sum is σ = 3375829824. Its totient is φ = 841806000.

The previous prime is 1966724017. The next prime is 1966724021. The reversal of 1966724018 is 8104276691.

It is a super-3 number, since 3×1966724018³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1966724018.

It is not an unprimeable number, because it can be changed into a prime (1966724017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78233 + ... + 100268.

It is an arithmetic number, because the mean of its divisors is an integer number (210989364).

Almost surely, 2^1966724018 is an apocalyptic number.

1966724018 is a deficient number, since it is larger than the sum of its proper divisors (1409105806).

1966724018 is a wasteful number, since it uses less digits than its factorization.

1966724018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179297.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 1966724018 is about 44347.7622659814. The cubic root of 1966724018 is about 1252.8944165493.

The spelling of 1966724018 in words is "one billion, nine hundred sixty-six million, seven hundred twenty-four thousand, eighteen".