780193134 has 80 divisors (see below), whose sum is σ = 2004143328. Its totient is φ = 222222528.

The previous prime is 780193133. The next prime is 780193157. The reversal of 780193134 is 431391087.

It is a happy number.

780193134 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (780193133) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 449332 + ... + 451064.

Almost surely, 2^780193134 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 780193134, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1002071664).

780193134 is an abundant number, since it is smaller than the sum of its proper divisors (1223950194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

780193134 is a wasteful number, since it uses less digits than its factorization.

780193134 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2151 (or 2142 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 780193134 is about 27931.9375267811. The cubic root of 780193134 is about 920.5923776296.

The spelling of 780193134 in words is "seven hundred eighty million, one hundred ninety-three thousand, one hundred thirty-four".