1678279465 has 16 divisors (see below), whose sum is σ = 2062342656. Its totient is φ = 1310400000.

The previous prime is 1678279453. The next prime is 1678279487. The reversal of 1678279465 is 5649728761.

It is not a de Polignac number, because 1678279465 - 2¹⁵ = 1678246697 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 417465 + ... + 421465.

It is an arithmetic number, because the mean of its divisors is an integer number (128896416).

Almost surely, 2^1678279465 is an apocalyptic number.

It is an amenable number.

1678279465 is a deficient number, since it is larger than the sum of its proper divisors (384063191).

1678279465 is a wasteful number, since it uses less digits than its factorization.

1678279465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6000.

The product of its digits is 5080320, while the sum is 55.

The square root of 1678279465 is about 40966.8093094886. The cubic root of 1678279465 is about 1188.3784294850.

The spelling of 1678279465 in words is "one billion, six hundred seventy-eight million, two hundred seventy-nine thousand, four hundred sixty-five".