1806212045 has 8 divisors (see below), whose sum is σ = 2364495840. Its totient is φ = 1313608720.

The previous prime is 1806212003. The next prime is 1806212099. The reversal of 1806212045 is 5402126081.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1806212045 - 2⁸ = 1806211789 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1806211999 and 1806212017.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16420055 + ... + 16420164.

It is an arithmetic number, because the mean of its divisors is an integer number (295561980).

Almost surely, 2^1806212045 is an apocalyptic number.

It is an amenable number.

1806212045 is a deficient number, since it is larger than the sum of its proper divisors (558283795).

1806212045 is a wasteful number, since it uses less digits than its factorization.

1806212045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32840235.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 1806212045 is about 42499.5534682425. The cubic root of 1806212045 is about 1217.8381595214.

The spelling of 1806212045 in words is "one billion, eight hundred six million, two hundred twelve thousand, forty-five".