1695418138 has 16 divisors (see below), whose sum is σ = 2606950440. Its totient is φ = 826695936.

The previous prime is 1695418073. The next prime is 1695418157. The reversal of 1695418138 is 8318145961.

It can be written as a sum of positive squares in 4 ways, for example, as 880486929 + 814931209 = 29673^2 + 28547^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52245 + ... + 78232.

Almost surely, 2^1695418138 is an apocalyptic number.

1695418138 is a deficient number, since it is larger than the sum of its proper divisors (911532302).

1695418138 is a wasteful number, since it uses less digits than its factorization.

1695418138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130641.

The product of its digits is 207360, while the sum is 46.

The square root of 1695418138 is about 41175.4555287492. The cubic root of 1695418138 is about 1192.4099967379.

The spelling of 1695418138 in words is "one billion, six hundred ninety-five million, four hundred eighteen thousand, one hundred thirty-eight".