1655157085 has 16 divisors (see below), whose sum is σ = 2038668912. Its totient is φ = 1289267200.

The previous prime is 1655157083. The next prime is 1655157109. The reversal of 1655157085 is 5807515561.

It can be written as a sum of positive squares in 8 ways, for example, as 41447844 + 1613709241 = 6438^2 + 40171^2 .

It is not a de Polignac number, because 1655157085 - 2¹ = 1655157083 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1655157083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99057 + ... + 114553.

It is an arithmetic number, because the mean of its divisors is an integer number (127416807).

Almost surely, 2^1655157085 is an apocalyptic number.

It is an amenable number.

1655157085 is a deficient number, since it is larger than the sum of its proper divisors (383511827).

1655157085 is a wasteful number, since it uses less digits than its factorization.

1655157085 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16064.

The product of its (nonzero) digits is 210000, while the sum is 43.

The square root of 1655157085 is about 40683.6218274627. The cubic root of 1655157085 is about 1182.8955712402.

The spelling of 1655157085 in words is "one billion, six hundred fifty-five million, one hundred fifty-seven thousand, eighty-five".