1661342834 has 16 divisors (see below), whose sum is σ = 2501074176. Its totient is φ = 827658000.

The previous prime is 1661342821. The next prime is 1661342911. The reversal of 1661342834 is 4382431661.

It is a happy number.

It is a Curzon number.

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, 850559 + ... + 852509.

It is an arithmetic number, because the mean of its divisors is an integer number (156317136).

Almost surely, 2^1661342834 is an apocalyptic number.

1661342834 is a deficient number, since it is larger than the sum of its proper divisors (839731342).

1661342834 is a wasteful number, since it uses less digits than its factorization.

1661342834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3281.

The product of its digits is 82944, while the sum is 38.

The square root of 1661342834 is about 40759.5735257375. The cubic root of 1661342834 is about 1184.3673346055.

The spelling of 1661342834 in words is "one billion, six hundred sixty-one million, three hundred forty-two thousand, eight hundred thirty-four".