1661302854 has 24 divisors (see below), whose sum is σ = 3603628080. Its totient is φ = 553130928.

The previous prime is 1661302817. The next prime is 1661302931. The reversal of 1661302854 is 4582031661.

It is a happy number.

1661302854 is a `hidden beast` number, since 16 + 613 + 0 + 28 + 5 + 4 = 666.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 36834 + ... + 68405.

It is an arithmetic number, because the mean of its divisors is an integer number (150151170).

Almost surely, 2^1661302854 is an apocalyptic number.

1661302854 is an abundant number, since it is smaller than the sum of its proper divisors (1942325226).

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

1661302854 is a wasteful number, since it uses less digits than its factorization.

1661302854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106124 (or 106121 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 1661302854 is about 40759.0830858595. The cubic root of 1661302854 is about 1184.3578339805.

The spelling of 1661302854 in words is "one billion, six hundred sixty-one million, three hundred two thousand, eight hundred fifty-four".