1680965042 has 8 divisors (see below), whose sum is σ = 2530421532. Its totient is φ = 837491200.

The previous prime is 1680965029. The next prime is 1680965063. The reversal of 1680965042 is 2405690861.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1350489001 + 330476041 = 36749^2 + 18179^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1494959 + ... + 1496082.

Almost surely, 2^1680965042 is an apocalyptic number.

1680965042 is a deficient number, since it is larger than the sum of its proper divisors (849456490).

1680965042 is a wasteful number, since it uses less digits than its factorization.

1680965042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991324.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1680965042 is about 40999.5736807104. The cubic root of 1680965042 is about 1189.0119713599.

The spelling of 1680965042 in words is "one billion, six hundred eighty million, nine hundred sixty-five thousand, forty-two".