1656474456 has 192 divisors, whose sum is σ = 5253534720. Its totient is φ = 425917440.

The previous prime is 1656474427. The next prime is 1656474493. The reversal of 1656474456 is 6544746561.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1163361 + ... + 1164783.

It is an arithmetic number, because the mean of its divisors is an integer number (27362160).

Almost surely, 2^1656474456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1656474456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2626767360).

1656474456 is an abundant number, since it is smaller than the sum of its proper divisors (3597060264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1656474456 is a wasteful number, since it uses less digits than its factorization.

1656474456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1506 (or 1489 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 48.

The square root of 1656474456 is about 40699.8090413211. The cubic root of 1656474456 is about 1183.2093177094.

The spelling of 1656474456 in words is "one billion, six hundred fifty-six million, four hundred seventy-four thousand, four hundred fifty-six".