780851138 has 8 divisors (see below), whose sum is σ = 1196197632. Its totient is φ = 382118596.

The previous prime is 780851119. The next prime is 780851167. The reversal of 780851138 is 831158087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 780851095 and 780851104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4153370 + ... + 4153557.

It is an arithmetic number, because the mean of its divisors is an integer number (149524704).

Almost surely, 2^780851138 is an apocalyptic number.

780851138 is a deficient number, since it is larger than the sum of its proper divisors (415346494).

780851138 is a wasteful number, since it uses less digits than its factorization.

780851138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8306976.

The product of its (nonzero) digits is 53760, while the sum is 41.

The square root of 780851138 is about 27943.7137474603. The cubic root of 780851138 is about 920.8511098270.

The spelling of 780851138 in words is "seven hundred eighty million, eight hundred fifty-one thousand, one hundred thirty-eight".