1438700785 has 16 divisors (see below), whose sum is σ = 1810838016. Its totient is φ = 1096020288.

The previous prime is 1438700777. The next prime is 1438700797. The reversal of 1438700785 is 5870078341.

It is a cyclic number.

It is not a de Polignac number, because 1438700785 - 2³ = 1438700777 is a prime.

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, 74037 + ... + 91426.

It is an arithmetic number, because the mean of its divisors is an integer number (113177376).

Almost surely, 2^1438700785 is an apocalyptic number.

It is an amenable number.

1438700785 is a deficient number, since it is larger than the sum of its proper divisors (372137231).

1438700785 is a wasteful number, since it uses less digits than its factorization.

1438700785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165552.

The product of its (nonzero) digits is 188160, while the sum is 43.

The square root of 1438700785 is about 37930.2093983147. The cubic root of 1438700785 is about 1128.9035191014.

The spelling of 1438700785 in words is "one billion, four hundred thirty-eight million, seven hundred thousand, seven hundred eighty-five".