618067973 has 4 divisors (see below), whose sum is σ = 618132108. Its totient is φ = 618003840.

The previous prime is 618067951. The next prime is 618067991. The reversal of 618067973 is 379760816.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 206870689 + 411197284 = 14383^2 + 20278^2 .

It is a cyclic number.

It is not a de Polignac number, because 618067973 - 2²⁰ = 617019397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (618067913) 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, 14348 + ... + 37973.

It is an arithmetic number, because the mean of its divisors is an integer number (154533027).

Almost surely, 2^618067973 is an apocalyptic number.

It is an amenable number.

618067973 is a deficient number, since it is larger than the sum of its proper divisors (64135).

618067973 is a wasteful number, since it uses less digits than its factorization.

618067973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64134.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 618067973 is about 24860.9728892495. The cubic root of 618067973 is about 851.8152546195.

The spelling of 618067973 in words is "six hundred eighteen million, sixty-seven thousand, nine hundred seventy-three".