1655628898 has 16 divisors (see below), whose sum is σ = 3096241344. Its totient is φ = 645050160.

The previous prime is 1655628851. The next prime is 1655628911. The reversal of 1655628898 is 8988265561.

It is a super-2 number, since 2×1655628898² = 5482214095785388808, which contains 22 as substring.

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, 5375265 + ... + 5375572.

It is an arithmetic number, because the mean of its divisors is an integer number (193515084).

Almost surely, 2^1655628898 is an apocalyptic number.

1655628898 is a deficient number, since it is larger than the sum of its proper divisors (1440612446).

1655628898 is a wasteful number, since it uses less digits than its factorization.

1655628898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10750857.

The product of its digits is 8294400, while the sum is 58.

The square root of 1655628898 is about 40689.4199762051. The cubic root of 1655628898 is about 1183.0079578511.

It can be divided in two parts, 16556 and 28898, that added together give a palindrome (45454).

The spelling of 1655628898 in words is "one billion, six hundred fifty-five million, six hundred twenty-eight thousand, eight hundred ninety-eight".