1661702834 has 8 divisors (see below), whose sum is σ = 2719150128. Its totient is φ = 755319460.

The previous prime is 1661702797. The next prime is 1661702839. The reversal of 1661702834 is 4382071661.

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

It is a super-2 number, since 2×1661702834² = 5522512617047263112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1661702839) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37765952 + ... + 37765995.

It is an arithmetic number, because the mean of its divisors is an integer number (339893766).

Almost surely, 2^1661702834 is an apocalyptic number.

1661702834 is a deficient number, since it is larger than the sum of its proper divisors (1057447294).

1661702834 is a wasteful number, since it uses less digits than its factorization.

1661702834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75531960.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 1661702834 is about 40763.9894269440. The cubic root of 1661702834 is about 1184.4528761402.

The spelling of 1661702834 in words is "one billion, six hundred sixty-one million, seven hundred two thousand, eight hundred thirty-four".