1655711123 has 12 divisors (see below), whose sum is σ = 1882673520. Its totient is φ = 1453285680.

The previous prime is 1655711119. The next prime is 1655711137. The reversal of 1655711123 is 3211175561.

It is not a de Polignac number, because 1655711123 - 2² = 1655711119 is a prime.

It is a super-2 number, since 2×1655711123² = 5482758645651842258, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1655711123.

It is not an unprimeable number, because it can be changed into a prime (1655711423) 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 11 ways as a sum of consecutive naturals, for example, 232415 + ... + 239432.

It is an arithmetic number, because the mean of its divisors is an integer number (156889460).

Almost surely, 2^1655711123 is an apocalyptic number.

1655711123 is a deficient number, since it is larger than the sum of its proper divisors (226962397).

1655711123 is a wasteful number, since it uses less digits than its factorization.

1655711123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 471898 (or 471887 counting only the distinct ones).

The product of its digits is 6300, while the sum is 32.

The square root of 1655711123 is about 40690.4303614499. The cubic root of 1655711123 is about 1183.0275417927.

Adding to 1655711123 its reverse (3211175561), we get a palindrome (4866886684).

The spelling of 1655711123 in words is "one billion, six hundred fifty-five million, seven hundred eleven thousand, one hundred twenty-three".