1655613420 has 24 divisors (see below), whose sum is σ = 4635717744. Its totient is φ = 441496896.

The previous prime is 1655613409. The next prime is 1655613473. The reversal of 1655613420 is 243165561.

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, 13796719 + ... + 13796838.

It is an arithmetic number, because the mean of its divisors is an integer number (193154906).

Almost surely, 2^1655613420 is an apocalyptic number.

1655613420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1655613420 is an abundant number, since it is smaller than the sum of its proper divisors (2980104324).

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

1655613420 is a wasteful number, since it uses less digits than its factorization.

1655613420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27593569 (or 27593567 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1655613420 is about 40689.2297788985. The cubic root of 1655613420 is about 1183.0042713055.

Adding to 1655613420 its reverse (243165561), we get a palindrome (1898778981).

The spelling of 1655613420 in words is "one billion, six hundred fifty-five million, six hundred thirteen thousand, four hundred twenty".