1656553444 has 24 divisors (see below), whose sum is σ = 3567962048. Its totient is φ = 655339680.

The previous prime is 1656553433. The next prime is 1656553453. The reversal of 1656553444 is 4443556561.

It is a super-2 number, since 2×1656553444² = 5488338625656522272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1656553444.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2275122 + ... + 2275849.

Almost surely, 2^1656553444 is an apocalyptic number.

1656553444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1656553444 is an abundant number, since it is smaller than the sum of its proper divisors (1911408604).

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

1656553444 is a wasteful number, since it uses less digits than its factorization.

1656553444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4550995 (or 4550993 counting only the distinct ones).

The product of its digits is 864000, while the sum is 43.

The square root of 1656553444 is about 40700.7794028566. The cubic root of 1656553444 is about 1183.2281242882.

The spelling of 1656553444 in words is "one billion, six hundred fifty-six million, five hundred fifty-three thousand, four hundred forty-four".