16810609438 has 12 divisors (see below), whose sum is σ = 29332798272. Its totient is φ = 7204546860.

The previous prime is 16810609373. The next prime is 16810609451. The reversal of 16810609438 is 83490601861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 85768318 + ... + 85768513.

It is an arithmetic number, because the mean of its divisors is an integer number (2444399856).

Almost surely, 2^16810609438 is an apocalyptic number.

16810609438 is a deficient number, since it is larger than the sum of its proper divisors (12522188834).

16810609438 is a wasteful number, since it uses less digits than its factorization.

16810609438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171536847 (or 171536840 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 46.

The spelling of 16810609438 in words is "sixteen billion, eight hundred ten million, six hundred nine thousand, four hundred thirty-eight".