1974690065 has 8 divisors (see below), whose sum is σ = 2378184360. Its totient is φ = 1574047872.

The previous prime is 1974690043. The next prime is 1974690089. The reversal of 1974690065 is 5600964791.

It can be written as a sum of positive squares in 4 ways, for example, as 51955264 + 1922734801 = 7208^2 + 43849^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1974690065 - 2⁸ = 1974689809 is a prime.

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, 711500 + ... + 714269.

It is an arithmetic number, because the mean of its divisors is an integer number (297273045).

Almost surely, 2^1974690065 is an apocalyptic number.

It is an amenable number.

1974690065 is a deficient number, since it is larger than the sum of its proper divisors (403494295).

1974690065 is a wasteful number, since it uses less digits than its factorization.

1974690065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426051.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 1974690065 is about 44437.4849085769. The cubic root of 1974690065 is about 1254.5837182761.

The spelling of 1974690065 in words is "one billion, nine hundred seventy-four million, six hundred ninety thousand, sixty-five".