1656155279 has 2 divisors, whose sum is σ = 1656155280. Its totient is φ = 1656155278.

The previous prime is 1656155243. The next prime is 1656155297. The reversal of 1656155279 is 9725516561.

Together with next prime (1656155297) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1656155279 - 2²⁴ = 1639378063 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1656155209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 828077639 + 828077640.

It is an arithmetic number, because the mean of its divisors is an integer number (828077640).

Almost surely, 2^1656155279 is an apocalyptic number.

1656155279 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656155279 is an equidigital number, since it uses as much as digits as its factorization.

1656155279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 567000, while the sum is 47.

The square root of 1656155279 is about 40695.8877406551. The cubic root of 1656155279 is about 1183.1333174512.

The spelling of 1656155279 in words is "one billion, six hundred fifty-six million, one hundred fifty-five thousand, two hundred seventy-nine".