5129172946 has 4 divisors (see below), whose sum is σ = 7693759422. Its totient is φ = 2564586472.

The previous prime is 5129172941. The next prime is 5129172959. The reversal of 5129172946 is 6492719215.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3583818225 + 1545354721 = 59865^2 + 39311^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5129172896 and 5129172905.

It is not an unprimeable number, because it can be changed into a prime (5129172941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1282293235 + ... + 1282293238.

Almost surely, 2^5129172946 is an apocalyptic number.

5129172946 is a deficient number, since it is larger than the sum of its proper divisors (2564586476).

5129172946 is a wasteful number, since it uses less digits than its factorization.

5129172946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564586475.

The product of its digits is 272160, while the sum is 46.

The square root of 5129172946 is about 71618.2445051539. The cubic root of 5129172946 is about 1724.5764354990.

The spelling of 5129172946 in words is "five billion, one hundred twenty-nine million, one hundred seventy-two thousand, nine hundred forty-six".