2045421636 has 48 divisors (see below), whose sum is σ = 4805390016. Its totient is φ = 677146624.

The previous prime is 2045421629. The next prime is 2045421641. The reversal of 2045421636 is 6361245402.

It is a junction number, because it is equal to n+sod(n) for n = 2045421597 and 2045421606.

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, 1680100 + ... + 1681316.

It is an arithmetic number, because the mean of its divisors is an integer number (100112292).

Almost surely, 2^2045421636 is an apocalyptic number.

It is an amenable number.

2045421636 is an abundant number, since it is smaller than the sum of its proper divisors (2759968380).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2045421636 is a wasteful number, since it uses less digits than its factorization.

2045421636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068 (or 2066 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 2045421636 is about 45226.3378574918. The cubic root of 2045421636 is about 1269.3876883798.

The spelling of 2045421636 in words is "two billion, forty-five million, four hundred twenty-one thousand, six hundred thirty-six".