7891302061 has 4 divisors (see below), whose sum is σ = 8145860224. Its totient is φ = 7636743900.

The previous prime is 7891302043. The next prime is 7891302071. The reversal of 7891302061 is 1602031987.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1602031987 = 19 ⋅84317473.

It is a cyclic number.

It is not a de Polignac number, because 7891302061 - 2⁷ = 7891301933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 7891302061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7891302011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127279035 + ... + 127279096.

It is an arithmetic number, because the mean of its divisors is an integer number (2036465056).

Almost surely, 2^7891302061 is an apocalyptic number.

It is an amenable number.

7891302061 is a deficient number, since it is larger than the sum of its proper divisors (254558163).

7891302061 is a wasteful number, since it uses less digits than its factorization.

7891302061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254558162.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 7891302061 is about 88833.0009681087. Note that the first 3 decimals coincide. The cubic root of 7891302061 is about 1990.9005007607.

The spelling of 7891302061 in words is "seven billion, eight hundred ninety-one million, three hundred two thousand, sixty-one".