1655261080 has 64 divisors (see below), whose sum is σ = 4067884800. Its totient is φ = 601176960.

The previous prime is 1655261017. The next prime is 1655261093. The reversal of 1655261080 is 801625561.

It is a happy number.

It is a super-3 number, since 3×1655261080³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 465951 + ... + 469489.

It is an arithmetic number, because the mean of its divisors is an integer number (63560700).

Almost surely, 2^1655261080 is an apocalyptic number.

1655261080 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1655261080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2033942400).

1655261080 is an abundant number, since it is smaller than the sum of its proper divisors (2412623720).

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

1655261080 is a wasteful number, since it uses less digits than its factorization.

1655261080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4624 (or 4620 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 34.

The square root of 1655261080 is about 40684.8999015605. The cubic root of 1655261080 is about 1182.9203448502.

The spelling of 1655261080 in words is "one billion, six hundred fifty-five million, two hundred sixty-one thousand, eighty".