1656353442 has 16 divisors (see below), whose sum is σ = 3321227520. Its totient is φ = 550697712.

The previous prime is 1656353393. The next prime is 1656353453. The reversal of 1656353442 is 2443536561.

It is a super-3 number, since 3×1656353442³ (a number of 29 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1656353442.

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, 352498 + ... + 357165.

It is an arithmetic number, because the mean of its divisors is an integer number (207576720).

Almost surely, 2^1656353442 is an apocalyptic number.

1656353442 is an abundant number, since it is smaller than the sum of its proper divisors (1664874078).

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

1656353442 is a wasteful number, since it uses less digits than its factorization.

1656353442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 710057.

The product of its digits is 259200, while the sum is 39.

The square root of 1656353442 is about 40698.3223487160. The cubic root of 1656353442 is about 1183.1805038272.

The spelling of 1656353442 in words is "one billion, six hundred fifty-six million, three hundred fifty-three thousand, four hundred forty-two".