1974210965 has 4 divisors (see below), whose sum is σ = 2369053164. Its totient is φ = 1579368768.

The previous prime is 1974210947. The next prime is 1974210971. The reversal of 1974210965 is 5690124791.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1027971844 + 946239121 = 32062^2 + 30761^2 .

It is a cyclic number.

It is not a de Polignac number, because 1974210965 - 2⁸ = 1974210709 is a prime.

It is a Duffinian number.

It is a congruent number.

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, 197421092 + ... + 197421101.

It is an arithmetic number, because the mean of its divisors is an integer number (592263291).

Almost surely, 2^1974210965 is an apocalyptic number.

It is an amenable number.

1974210965 is a deficient number, since it is larger than the sum of its proper divisors (394842199).

1974210965 is an equidigital number, since it uses as much as digits as its factorization.

1974210965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394842198.

The product of its (nonzero) digits is 136080, while the sum is 44.

The square root of 1974210965 is about 44432.0938624324. The cubic root of 1974210965 is about 1254.4822475547.

The spelling of 1974210965 in words is "one billion, nine hundred seventy-four million, two hundred ten thousand, nine hundred sixty-five".