134798781 has 8 divisors (see below), whose sum is σ = 193557280. Its totient is φ = 82953072.

The previous prime is 134798753. The next prime is 134798849. The reversal of 134798781 is 187897431.

134798781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 134798781 - 2¹⁵ = 134766013 is a prime.

It is a super-2 number, since 2×134798781² = 36341422718171922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 134798781.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134798731) 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, 1728151 + ... + 1728228.

It is an arithmetic number, because the mean of its divisors is an integer number (24194660).

Almost surely, 2^134798781 is an apocalyptic number.

It is an amenable number.

134798781 is a deficient number, since it is larger than the sum of its proper divisors (58758499).

134798781 is a wasteful number, since it uses less digits than its factorization.

134798781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3456395.

The product of its digits is 338688, while the sum is 48.

The square root of 134798781 is about 11610.2877225330. The cubic root of 134798781 is about 512.7377834525.

It can be divided in two parts, 1347 and 98781, that added together give a triangular number (100128 = T₄₄₇).

The spelling of 134798781 in words is "one hundred thirty-four million, seven hundred ninety-eight thousand, seven hundred eighty-one".