6429923155 has 4 divisors (see below), whose sum is σ = 7715907792. Its totient is φ = 5143938520.

The previous prime is 6429923153. The next prime is 6429923161. The reversal of 6429923155 is 5513299246.

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

It is not a de Polignac number, because 6429923155 - 2¹ = 6429923153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6429923153) 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 in 3 ways as a sum of consecutive naturals, for example, 642992311 + ... + 642992320.

It is an arithmetic number, because the mean of its divisors is an integer number (1928976948).

Almost surely, 2^6429923155 is an apocalyptic number.

6429923155 is a deficient number, since it is larger than the sum of its proper divisors (1285984637).

6429923155 is a wasteful number, since it uses less digits than its factorization.

6429923155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285984636.

The product of its digits is 583200, while the sum is 46.

The square root of 6429923155 is about 80186.8016259534. The cubic root of 6429923155 is about 1859.5245976400.

The spelling of 6429923155 in words is "six billion, four hundred twenty-nine million, nine hundred twenty-three thousand, one hundred fifty-five".