80849138 has 16 divisors (see below), whose sum is σ = 123240096. Its totient is φ = 39773280.

The previous prime is 80849063. The next prime is 80849149. The reversal of 80849138 is 83194808.

It is a junction number, because it is equal to n+sod(n) for n = 80849095 and 80849104.

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, 46118 + ... + 47838.

It is an arithmetic number, because the mean of its divisors is an integer number (7702506).

Almost surely, 2^80849138 is an apocalyptic number.

80849138 is a deficient number, since it is larger than the sum of its proper divisors (42390958).

80849138 is a wasteful number, since it uses less digits than its factorization.

80849138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2089.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 80849138 is about 8991.6148716457. The cubic root of 80849138 is about 432.4060860607.

The spelling of 80849138 in words is "eighty million, eight hundred forty-nine thousand, one hundred thirty-eight".