1974204644 has 12 divisors (see below), whose sum is σ = 3455865084. Its totient is φ = 986814624.

The previous prime is 1974204623. The next prime is 1974204697. The reversal of 1974204644 is 4464024791.

It can be written as a sum of positive squares in 2 ways, for example, as 1052353600 + 921851044 = 32440^2 + 30362^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56099 + ... + 84234.

It is an arithmetic number, because the mean of its divisors is an integer number (287988757).

Almost surely, 2^1974204644 is an apocalyptic number.

It is an amenable number.

1974204644 is a deficient number, since it is larger than the sum of its proper divisors (1481660440).

1974204644 is a wasteful number, since it uses less digits than its factorization.

1974204644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143854 (or 143852 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The square root of 1974204644 is about 44432.0227313590. The cubic root of 1974204644 is about 1254.4809086922.

The spelling of 1974204644 in words is "one billion, nine hundred seventy-four million, two hundred four thousand, six hundred forty-four".