4378263109 has 4 divisors (see below), whose sum is σ = 4776287040. Its totient is φ = 3980239180.

The previous prime is 4378263107. The next prime is 4378263133. The reversal of 4378263109 is 9013628734.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 4378263109 - 2¹ = 4378263107 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4378263107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199011949 + ... + 199011970.

It is an arithmetic number, because the mean of its divisors is an integer number (1194071760).

Almost surely, 2^4378263109 is an apocalyptic number.

It is an amenable number.

4378263109 is a deficient number, since it is larger than the sum of its proper divisors (398023931).

4378263109 is a wasteful number, since it uses less digits than its factorization.

4378263109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398023930.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 4378263109 is about 66168.4449643484. Note that the first 3 decimals coincide. The cubic root of 4378263109 is about 1635.9396767441.

The spelling of 4378263109 in words is "four billion, three hundred seventy-eight million, two hundred sixty-three thousand, one hundred nine".