818157045 has 16 divisors (see below), whose sum is σ = 1386054720. Its totient is φ = 410682624.

The previous prime is 818157037. The next prime is 818157103. The reversal of 818157045 is 540751818.

It is not a de Polignac number, because 818157045 - 2³ = 818157037 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 818156994 and 818157012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1603975 + ... + 1604484.

It is an arithmetic number, because the mean of its divisors is an integer number (86628420).

Almost surely, 2^818157045 is an apocalyptic number.

818157045 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

818157045 is a deficient number, since it is larger than the sum of its proper divisors (567897675).

818157045 is a wasteful number, since it uses less digits than its factorization.

818157045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208484.

The product of its (nonzero) digits is 44800, while the sum is 39.

The square root of 818157045 is about 28603.4446352183. Note that the first 3 decimals coincide. The cubic root of 818157045 is about 935.2884217969.

The spelling of 818157045 in words is "eight hundred eighteen million, one hundred fifty-seven thousand, forty-five".