8438451745 has 8 divisors (see below), whose sum is σ = 10220779584. Its totient is φ = 6687669744.

The previous prime is 8438451739. The next prime is 8438451787. The reversal of 8438451745 is 5471548348.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8438451745 - 2³ = 8438451737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7885869 + ... + 7886938.

It is an arithmetic number, because the mean of its divisors is an integer number (1277597448).

Almost surely, 2^8438451745 is an apocalyptic number.

It is an amenable number.

8438451745 is a deficient number, since it is larger than the sum of its proper divisors (1782327839).

8438451745 is a wasteful number, since it uses less digits than its factorization.

8438451745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15772919.

The product of its digits is 2150400, while the sum is 49.

The square root of 8438451745 is about 91861.0458518735. The cubic root of 8438451745 is about 2035.8897557429.

The spelling of 8438451745 in words is "eight billion, four hundred thirty-eight million, four hundred fifty-one thousand, seven hundred forty-five".