942491278891 has 2 divisors, whose sum is σ = 942491278892. Its totient is φ = 942491278890.

The previous prime is 942491278867. The next prime is 942491278913. The reversal of 942491278891 is 198872194249.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 942491278891 - 2¹¹ = 942491276843 is a prime.

It is not a weakly prime, because it can be changed into another prime (942491270891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 471245639445 + 471245639446.

It is an arithmetic number, because the mean of its divisors is an integer number (471245639446).

Almost surely, 2^942491278891 is an apocalyptic number.

942491278891 is a deficient number, since it is larger than the sum of its proper divisors (1).

942491278891 is an equidigital number, since it uses as much as digits as its factorization.

942491278891 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20901888, while the sum is 64.

The spelling of 942491278891 in words is "nine hundred forty-two billion, four hundred ninety-one million, two hundred seventy-eight thousand, eight hundred ninety-one".