1864755427649 has 8 divisors (see below), whose sum is σ = 1895370890880. Its totient is φ = 1834141438800.

The previous prime is 1864755427609. The next prime is 1864755427679. The reversal of 1864755427649 is 9467245574681.

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 1864755427649 - 2³⁶ = 1796035950913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1864755427609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2344262 + ... + 3037280.

It is an arithmetic number, because the mean of its divisors is an integer number (236921361360).

Almost surely, 2^{1864755427649} is an apocalyptic number.

It is an amenable number.

1864755427649 is a deficient number, since it is larger than the sum of its proper divisors (30615463231).

1864755427649 is an equidigital number, since it uses as much as digits as its factorization.

1864755427649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 737191.

The product of its digits is 406425600, while the sum is 68.

The spelling of 1864755427649 in words is "one trillion, eight hundred sixty-four billion, seven hundred fifty-five million, four hundred twenty-seven thousand, six hundred forty-nine".