2378079861 has 8 divisors (see below), whose sum is σ = 3190226400. Its totient is φ = 1575659952.

The previous prime is 2378079857. The next prime is 2378079877. The reversal of 2378079861 is 1689708732.

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

It is not a de Polignac number, because 2378079861 - 2² = 2378079857 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2378079061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2431086 + ... + 2432063.

It is an arithmetic number, because the mean of its divisors is an integer number (398778300).

Almost surely, 2^2378079861 is an apocalyptic number.

It is an amenable number.

2378079861 is a deficient number, since it is larger than the sum of its proper divisors (812146539).

2378079861 is a wasteful number, since it uses less digits than its factorization.

2378079861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4863315.

The product of its (nonzero) digits is 1016064, while the sum is 51.

The square root of 2378079861 is about 48765.5601936449. The cubic root of 2378079861 is about 1334.7772984854. Note that the first 3 decimals are identical.

The spelling of 2378079861 in words is "two billion, three hundred seventy-eight million, seventy-nine thousand, eight hundred sixty-one".