1661655114 has 64 divisors (see below), whose sum is σ = 4291660800. Its totient is φ = 466705584.

The previous prime is 1661655101. The next prime is 1661655133. The reversal of 1661655114 is 4115561661.

It is a super-2 number, since 2×1661655114² = 5522195435764705992, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14952 + ... + 59555.

It is an arithmetic number, because the mean of its divisors is an integer number (67057200).

Almost surely, 2^1661655114 is an apocalyptic number.

1661655114 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1661655114 is an abundant number, since it is smaller than the sum of its proper divisors (2630005686).

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

1661655114 is a wasteful number, since it uses less digits than its factorization.

1661655114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74584 (or 74578 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 1661655114 is about 40763.4041022091. The cubic root of 1661655114 is about 1184.4415378449.

The spelling of 1661655114 in words is "one billion, six hundred sixty-one million, six hundred fifty-five thousand, one hundred fourteen".