2119149478 has 16 divisors (see below), whose sum is σ = 3284865936. Its totient is φ = 1024682400.

The previous prime is 2119149427. The next prime is 2119149479. The reversal of 2119149478 is 8749419112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2119149479) 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, 113301 + ... + 130672.

It is an arithmetic number, because the mean of its divisors is an integer number (205304121).

Almost surely, 2^2119149478 is an apocalyptic number.

2119149478 is a deficient number, since it is larger than the sum of its proper divisors (1165716458).

2119149478 is a wasteful number, since it uses less digits than its factorization.

2119149478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244119.

The product of its digits is 145152, while the sum is 46.

The square root of 2119149478 is about 46034.2207276283. The cubic root of 2119149478 is about 1284.4598411034.

The spelling of 2119149478 in words is "two billion, one hundred nineteen million, one hundred forty-nine thousand, four hundred seventy-eight".