1687301138 has 16 divisors (see below), whose sum is σ = 2541597696. Its totient is φ = 840109680.

The previous prime is 1687301117. The next prime is 1687301159. The reversal of 1687301138 is 8311037861.

It is an interprime number because it is at equal distance from previous prime (1687301117) and next prime (1687301159).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 627545 + ... + 630227.

It is an arithmetic number, because the mean of its divisors is an integer number (158849856).

Almost surely, 2^1687301138 is an apocalyptic number.

1687301138 is a deficient number, since it is larger than the sum of its proper divisors (854296558).

1687301138 is a wasteful number, since it uses less digits than its factorization.

1687301138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3889.

The product of its (nonzero) digits is 24192, while the sum is 38.

The square root of 1687301138 is about 41076.7712703908. The cubic root of 1687301138 is about 1190.5040206578.

Adding to 1687301138 its reverse (8311037861), we get a palindrome (9998338999).

The spelling of 1687301138 in words is "one billion, six hundred eighty-seven million, three hundred one thousand, one hundred thirty-eight".