3643949256974 has 8 divisors (see below), whose sum is σ = 5886379569000. Its totient is φ = 1681822733976.

The previous prime is 3643949256929. The next prime is 3643949257007. The reversal of 3643949256974 is 4796529493463.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 3643949256898 and 3643949256907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70075947224 + ... + 70075947275.

It is an arithmetic number, because the mean of its divisors is an integer number (735797446125).

Almost surely, 2^{3643949256974} is an apocalyptic number.

3643949256974 is a deficient number, since it is larger than the sum of its proper divisors (2242430312026).

3643949256974 is a wasteful number, since it uses less digits than its factorization.

3643949256974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140151894514.

The product of its digits is 1058158080, while the sum is 71.

The spelling of 3643949256974 in words is "three trillion, six hundred forty-three billion, nine hundred forty-nine million, two hundred fifty-six thousand, nine hundred seventy-four".