7891213102 has 8 divisors (see below), whose sum is σ = 12533103216. Its totient is φ = 3713512032.

The previous prime is 7891213009. The next prime is 7891213111. The reversal of 7891213102 is 2013121987.

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

It is a Harshad number since it is a multiple of its sum of digits (34), and also a Moran number because the ratio is a prime number: 232094503 = 7891213102 / (7 + 8 + 9 + 1 + 2 + 1 + 3 + 1 + 0 + 2).

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 116047218 + ... + 116047285.

It is an arithmetic number, because the mean of its divisors is an integer number (1566637902).

Almost surely, 2^7891213102 is an apocalyptic number.

7891213102 is a deficient number, since it is larger than the sum of its proper divisors (4641890114).

7891213102 is a wasteful number, since it uses less digits than its factorization.

7891213102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232094522.

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 7891213102 is about 88832.5002575071. The cubic root of 7891213102 is about 1990.8930195625.

The spelling of 7891213102 in words is "seven billion, eight hundred ninety-one million, two hundred thirteen thousand, one hundred two".