2642156827 has 2 divisors, whose sum is σ = 2642156828. Its totient is φ = 2642156826.

The previous prime is 2642156819. The next prime is 2642156831. The reversal of 2642156827 is 7286512462.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2642156827 - 2³ = 2642156819 is a prime.

It is not a weakly prime, because it can be changed into another prime (2642156807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1321078413 + 1321078414.

It is an arithmetic number, because the mean of its divisors is an integer number (1321078414).

Almost surely, 2^2642156827 is an apocalyptic number.

2642156827 is a deficient number, since it is larger than the sum of its proper divisors (1).

2642156827 is an equidigital number, since it uses as much as digits as its factorization.

2642156827 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 43.

The square root of 2642156827 is about 51401.9146238737. The cubic root of 2642156827 is about 1382.4609220206.

The spelling of 2642156827 in words is "two billion, six hundred forty-two million, one hundred fifty-six thousand, eight hundred twenty-seven".