1974648869285 has 4 divisors (see below), whose sum is σ = 2369578643148. Its totient is φ = 1579719095424.

The previous prime is 1974648869269. The next prime is 1974648869287. The reversal of 1974648869285 is 5829688464791.

It is a Cunningham number, because it is equal to 1405222²+1.

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 710874941956 + 1263773927329 = 843134^2 + 1124177^2 .

It is a cyclic number.

It is not a de Polignac number, because 1974648869285 - 2⁴ = 1974648869269 is a prime.

It is a super-2 number, since 2×1974648869285² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1974648869287) 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, 197464886924 + ... + 197464886933.

It is an arithmetic number, because the mean of its divisors is an integer number (592394660787).

Almost surely, 2^{1974648869285} is an apocalyptic number.

It is an amenable number.

1974648869285 is a deficient number, since it is larger than the sum of its proper divisors (394929773863).

1974648869285 is an equidigital number, since it uses as much as digits as its factorization.

1974648869285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394929773862.

The product of its digits is 1672151040, while the sum is 77.

The spelling of 1974648869285 in words is "one trillion, nine hundred seventy-four billion, six hundred forty-eight million, eight hundred sixty-nine thousand, two hundred eighty-five".