1816266045 has 32 divisors (see below), whose sum is σ = 3191529600. Its totient is φ = 874691840.

The previous prime is 1816266041. The next prime is 1816266059. The reversal of 1816266045 is 5406626181.

It is a happy number.

It is not a de Polignac number, because 1816266045 - 2² = 1816266041 is a prime.

It is a super-4 number, since 4×1816266045⁴ (a number of 38 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1816265994 and 1816266012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1816266041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12354 + ... + 61523.

It is an arithmetic number, because the mean of its divisors is an integer number (99735300).

Almost surely, 2^1816266045 is an apocalyptic number.

1816266045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1816266045 is a deficient number, since it is larger than the sum of its proper divisors (1375263555).

1816266045 is a wasteful number, since it uses less digits than its factorization.

1816266045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74045.

The product of its (nonzero) digits is 69120, while the sum is 39.

The square root of 1816266045 is about 42617.6729186379. The cubic root of 1816266045 is about 1220.0936157223.

The spelling of 1816266045 in words is "one billion, eight hundred sixteen million, two hundred sixty-six thousand, forty-five".