2134398478 has 16 divisors (see below), whose sum is σ = 3392730000. Its totient is φ = 1004242752.

The previous prime is 2134398403. The next prime is 2134398481. The reversal of 2134398478 is 8748934312.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182823 + ... + 194146.

It is an arithmetic number, because the mean of its divisors is an integer number (212045625).

Almost surely, 2^2134398478 is an apocalyptic number.

2134398478 is a deficient number, since it is larger than the sum of its proper divisors (1258331522).

2134398478 is a wasteful number, since it uses less digits than its factorization.

2134398478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377139.

The product of its digits is 1161216, while the sum is 49.

The square root of 2134398478 is about 46199.5506255202. The cubic root of 2134398478 is about 1287.5333908832.

The spelling of 2134398478 in words is "two billion, one hundred thirty-four million, three hundred ninety-eight thousand, four hundred seventy-eight".