It is a sphenic number, since it is the product of 3 distinct primes.
It is a congruent number.
It is an unprimeable number.
Almost surely, 21656155422 is an apocalyptic number.
1656155422 is a wasteful number, since it uses less digits than its factorization.
1656155422 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 128090.
The square root of 1656155422 is about 40695.8894975893. The cubic root of 1656155422 is about 1183.1333515036.
The spelling of 1656155422 in words is "one billion, six hundred fifty-six million, one hundred fifty-five thousand, four hundred twenty-two".