2085966138 has 16 divisors (see below), whose sum is σ = 4172541120. Its totient is φ = 695220576.

The previous prime is 2085966133. The next prime is 2085966139. The reversal of 2085966138 is 8316695802.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2085966133) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27718 + ... + 70286.

It is an arithmetic number, because the mean of its divisors is an integer number (260783820).

Almost surely, 2^2085966138 is an apocalyptic number.

2085966138 is an abundant number, since it is smaller than the sum of its proper divisors (2086574982).

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

2085966138 is a wasteful number, since it uses less digits than its factorization.

2085966138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50741.

The product of its (nonzero) digits is 622080, while the sum is 48.

The square root of 2085966138 is about 45672.3782827214. The cubic root of 2085966138 is about 1277.7201723248.

The spelling of 2085966138 in words is "two billion, eighty-five million, nine hundred sixty-six thousand, one hundred thirty-eight".