1656474654 has 16 divisors (see below), whose sum is σ = 3332101392. Its totient is φ = 548966208.

The previous prime is 1656474653. The next prime is 1656474683. The reversal of 1656474654 is 4564746561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1656474653) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 796879 + ... + 798954.

It is an arithmetic number, because the mean of its divisors is an integer number (208256337).

Almost surely, 2^1656474654 is an apocalyptic number.

1656474654 is an abundant number, since it is smaller than the sum of its proper divisors (1675626738).

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

1656474654 is a wasteful number, since it uses less digits than its factorization.

1656474654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1596011.

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

The square root of 1656474654 is about 40699.8114737648. The cubic root of 1656474654 is about 1183.2093648527.

The spelling of 1656474654 in words is "one billion, six hundred fifty-six million, four hundred seventy-four thousand, six hundred fifty-four".