2070185909 has 16 divisors (see below), whose sum is σ = 2437845120. Its totient is φ = 1738080960.

The previous prime is 2070185893. The next prime is 2070185911. The reversal of 2070185909 is 9095810702.

It is not a de Polignac number, because 2070185909 - 2⁴ = 2070185893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2070185959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133742 + ... + 148415.

It is an arithmetic number, because the mean of its divisors is an integer number (152365320).

Almost surely, 2^2070185909 is an apocalyptic number.

2070185909 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

2070185909 is a deficient number, since it is larger than the sum of its proper divisors (367659211).

2070185909 is a wasteful number, since it uses less digits than its factorization.

2070185909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282220.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 2070185909 is about 45499.2956978457. The cubic root of 2070185909 is about 1274.4900503799.

The spelling of 2070185909 in words is "two billion, seventy million, one hundred eighty-five thousand, nine hundred nine".