1656625410 has 96 divisors (see below), whose sum is σ = 4706095680. Its totient is φ = 400982400.

The previous prime is 1656625391. The next prime is 1656625417. The reversal of 1656625410 is 145266561.

1656625410 is a `hidden beast` number, since 1 + 6 + 56 + 62 + 541 + 0 = 666.

It is not an unprimeable number, because it can be changed into a prime (1656625417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1158576 + ... + 1160004.

It is an arithmetic number, because the mean of its divisors is an integer number (49021830).

Almost surely, 2^1656625410 is an apocalyptic number.

1656625410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1656625410, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2353047840).

1656625410 is an abundant number, since it is smaller than the sum of its proper divisors (3049470270).

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

1656625410 is a wasteful number, since it uses less digits than its factorization.

1656625410 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2624 (or 2621 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1656625410 is about 40701.6634795189. The cubic root of 1656625410 is about 1183.2452584495.

The spelling of 1656625410 in words is "one billion, six hundred fifty-six million, six hundred twenty-five thousand, four hundred ten".