1687034738 has 16 divisors (see below), whose sum is σ = 2725689120. Its totient is φ = 780536736.

The previous prime is 1687034737. The next prime is 1687034753. The reversal of 1687034738 is 8374307861.

It is a junction number, because it is equal to n+sod(n) for n = 1687034692 and 1687034701.

It is not an unprimeable number, because it can be changed into a prime (1687034737) 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, 514595 + ... + 517862.

It is an arithmetic number, because the mean of its divisors is an integer number (170355570).

Almost surely, 2^1687034738 is an apocalyptic number.

1687034738 is a deficient number, since it is larger than the sum of its proper divisors (1038654382).

1687034738 is a wasteful number, since it uses less digits than its factorization.

1687034738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1032521.

The product of its (nonzero) digits is 677376, while the sum is 47.

The square root of 1687034738 is about 41073.5284337735. The cubic root of 1687034738 is about 1190.4413630095.

The spelling of 1687034738 in words is "one billion, six hundred eighty-seven million, thirty-four thousand, seven hundred thirty-eight".