2785900139 has 16 divisors (see below), whose sum is σ = 3174522624. Its totient is φ = 2420061600.

The previous prime is 2785900127. The next prime is 2785900141. The reversal of 2785900139 is 9310095872.

It is not a de Polignac number, because 2785900139 - 2⁴ = 2785900123 is a prime.

It is a super-2 number, since 2×2785900139² = 15522479168960438642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2785900139.

It is not an unprimeable number, because it can be changed into a prime (2785900199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 270977 + ... + 281069.

It is an arithmetic number, because the mean of its divisors is an integer number (198407664).

Almost surely, 2^2785900139 is an apocalyptic number.

2785900139 is a deficient number, since it is larger than the sum of its proper divisors (388622485).

2785900139 is a wasteful number, since it uses less digits than its factorization.

2785900139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11218.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 2785900139 is about 52781.6269074761. The cubic root of 2785900139 is about 1407.0899085105.

The spelling of 2785900139 in words is "two billion, seven hundred eighty-five million, nine hundred thousand, one hundred thirty-nine".