2061661430 has 8 divisors (see below), whose sum is σ = 3710990592. Its totient is φ = 824664568.

The previous prime is 2061661409. The next prime is 2061661477. The reversal of 2061661430 is 341661602.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2061661393 and 2061661402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 103083062 + ... + 103083081.

It is an arithmetic number, because the mean of its divisors is an integer number (463873824).

Almost surely, 2^2061661430 is an apocalyptic number.

2061661430 is a deficient number, since it is larger than the sum of its proper divisors (1649329162).

2061661430 is a wasteful number, since it uses less digits than its factorization.

2061661430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206166150.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 2061661430 is about 45405.5220210053. The cubic root of 2061661430 is about 1272.7383059232.

The spelling of 2061661430 in words is "two billion, sixty-one million, six hundred sixty-one thousand, four hundred thirty".