1864518276872 has 32 divisors (see below), whose sum is σ = 3680044341600. Its totient is φ = 883175094144.

The previous prime is 1864518276839. The next prime is 1864518276893. The reversal of 1864518276872 is 2786728154681.

It is a junction number, because it is equal to n+sod(n) for n = 1864518276799 and 1864518276808.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10390988 + ... + 10568900.

It is an arithmetic number, because the mean of its divisors is an integer number (115001385675).

Almost surely, 2^{1864518276872} is an apocalyptic number.

It is an amenable number.

1864518276872 is a deficient number, since it is larger than the sum of its proper divisors (1815526064728).

1864518276872 is a wasteful number, since it uses less digits than its factorization.

1864518276872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246885 (or 246881 counting only the distinct ones).

The product of its digits is 72253440, while the sum is 65.

The spelling of 1864518276872 in words is "one trillion, eight hundred sixty-four billion, five hundred eighteen million, two hundred seventy-six thousand, eight hundred seventy-two".