1656155155 has 4 divisors (see below), whose sum is σ = 1987386192. Its totient is φ = 1324924120.

The previous prime is 1656155141. The next prime is 1656155177. The reversal of 1656155155 is 5515516561.

It is a semiprime because it is the product of two primes.

It is a de Polignac number, because none of the positive numbers 2^k-1656155155 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165615511 + ... + 165615520.

It is an arithmetic number, because the mean of its divisors is an integer number (496846548).

Almost surely, 2^1656155155 is an apocalyptic number.

1656155155 is a deficient number, since it is larger than the sum of its proper divisors (331231037).

1656155155 is an equidigital number, since it uses as much as digits as its factorization.

1656155155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331231036.

The product of its digits is 112500, while the sum is 40.

The square root of 1656155155 is about 40695.8862171596. The cubic root of 1656155155 is about 1183.1332879233.

The spelling of 1656155155 in words is "one billion, six hundred fifty-six million, one hundred fifty-five thousand, one hundred fifty-five".