618812545 has 16 divisors (see below), whose sum is σ = 825495552. Its totient is φ = 442226880.

The previous prime is 618812503. The next prime is 618812569. The reversal of 618812545 is 545218816.

It is a happy number.

It is not a de Polignac number, because 618812545 - 2⁷ = 618812417 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 618812498 and 618812507.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 151537 + ... + 155566.

It is an arithmetic number, because the mean of its divisors is an integer number (51593472).

Almost surely, 2^618812545 is an apocalyptic number.

618812545 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

618812545 is a deficient number, since it is larger than the sum of its proper divisors (206683007).

618812545 is a wasteful number, since it uses less digits than its factorization.

618812545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307152.

The product of its digits is 76800, while the sum is 40.

The square root of 618812545 is about 24875.9430976998. The cubic root of 618812545 is about 852.1571713136.

The spelling of 618812545 in words is "six hundred eighteen million, eight hundred twelve thousand, five hundred forty-five".