1655287842 has 32 divisors (see below), whose sum is σ = 3680248320. Its totient is φ = 492888960.

The previous prime is 1655287813. The next prime is 1655287849. The reversal of 1655287842 is 2487825561.

It is a junction number, because it is equal to n+sod(n) for n = 1655287791 and 1655287800.

It is not an unprimeable number, because it can be changed into a prime (1655287849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339867 + ... + 344702.

It is an arithmetic number, because the mean of its divisors is an integer number (115007760).

Almost surely, 2^1655287842 is an apocalyptic number.

1655287842 is an abundant number, since it is smaller than the sum of its proper divisors (2024960478).

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

1655287842 is a wasteful number, since it uses less digits than its factorization.

1655287842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 684618.

The product of its digits is 1075200, while the sum is 48.

The square root of 1655287842 is about 40685.2287937527. The cubic root of 1655287842 is about 1182.9267199057.

The spelling of 1655287842 in words is "one billion, six hundred fifty-five million, two hundred eighty-seven thousand, eight hundred forty-two".