1655281564 has 12 divisors (see below), whose sum is σ = 2899696464. Its totient is φ = 826796864.

The previous prime is 1655281559. The next prime is 1655281567. The reversal of 1655281564 is 4651825561.

It is a super-2 number, since 2×1655281564² = 5479914112236572192, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1655281564.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655281567) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206557 + ... + 214420.

It is an arithmetic number, because the mean of its divisors is an integer number (241641372).

Almost surely, 2^1655281564 is an apocalyptic number.

It is an amenable number.

1655281564 is a deficient number, since it is larger than the sum of its proper divisors (1244414900).

1655281564 is a wasteful number, since it uses less digits than its factorization.

1655281564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421964 (or 421962 counting only the distinct ones).

The product of its digits is 288000, while the sum is 43.

The square root of 1655281564 is about 40685.1516403712. The cubic root of 1655281564 is about 1182.9252244109.

The spelling of 1655281564 in words is "one billion, six hundred fifty-five million, two hundred eighty-one thousand, five hundred sixty-four".