7874800891 has 2 divisors, whose sum is σ = 7874800892. Its totient is φ = 7874800890.

The previous prime is 7874800837. The next prime is 7874800943. The reversal of 7874800891 is 1980084787.

It is an a-pointer prime, because the next prime (7874800943) can be obtained adding 7874800891 to its sum of digits (52).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7874800891 - 2⁷ = 7874800763 is a prime.

It is not a weakly prime, because it can be changed into another prime (7874804891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3937400445 + 3937400446.

It is an arithmetic number, because the mean of its divisors is an integer number (3937400446).

Almost surely, 2^7874800891 is an apocalyptic number.

7874800891 is a deficient number, since it is larger than the sum of its proper divisors (1).

7874800891 is an equidigital number, since it uses as much as digits as its factorization.

7874800891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 903168, while the sum is 52.

The square root of 7874800891 is about 88740.0748872796. The cubic root of 7874800891 is about 1989.5118362703.

The spelling of 7874800891 in words is "seven billion, eight hundred seventy-four million, eight hundred thousand, eight hundred ninety-one".