2379539861 has 4 divisors (see below), whose sum is σ = 2519512812. Its totient is φ = 2239566912.

The previous prime is 2379539839. The next prime is 2379539863. The reversal of 2379539861 is 1689359732.

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

It can be written as a sum of positive squares in 2 ways, for example, as 705911761 + 1673628100 = 26569^2 + 40910^2 .

It is a cyclic number.

It is not a de Polignac number, because 2379539861 - 2¹⁴ = 2379523477 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2379539863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 69986450 + ... + 69986483.

It is an arithmetic number, because the mean of its divisors is an integer number (629878203).

Almost surely, 2^2379539861 is an apocalyptic number.

It is an amenable number.

2379539861 is a deficient number, since it is larger than the sum of its proper divisors (139972951).

2379539861 is a wasteful number, since it uses less digits than its factorization.

2379539861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139972950.

The product of its digits is 2449440, while the sum is 53.

The square root of 2379539861 is about 48780.5274776729. The cubic root of 2379539861 is about 1335.0504006371.

The spelling of 2379539861 in words is "two billion, three hundred seventy-nine million, five hundred thirty-nine thousand, eight hundred sixty-one".