2078861002 has 4 divisors (see below), whose sum is σ = 3118291506. Its totient is φ = 1039430500.

The previous prime is 2078860991. The next prime is 2078861009. The reversal of 2078861002 is 2001688702.

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

It can be written as a sum of positive squares in only one way, i.e., 1172309121 + 906551881 = 34239^2 + 30109^2 .

It is not an unprimeable number, because it can be changed into a prime (2078861009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 519715249 + ... + 519715252.

Almost surely, 2^2078861002 is an apocalyptic number.

2078861002 is a deficient number, since it is larger than the sum of its proper divisors (1039430504).

2078861002 is a wasteful number, since it uses less digits than its factorization.

2078861002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1039430503.

The product of its (nonzero) digits is 10752, while the sum is 34.

The square root of 2078861002 is about 45594.5282024060. The cubic root of 2078861002 is about 1276.2678153175.

The spelling of 2078861002 in words is "two billion, seventy-eight million, eight hundred sixty-one thousand, two".