1864452081 has 16 divisors (see below), whose sum is σ = 2584588608. Its totient is φ = 1194547200.

The previous prime is 1864452077. The next prime is 1864452091. The reversal of 1864452081 is 1802544681.

It is not a de Polignac number, because 1864452081 - 2² = 1864452077 is a prime.

It is a super-2 number, since 2×1864452081² = 6952363124690461122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1864452041) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 104880 + ... + 121361.

It is an arithmetic number, because the mean of its divisors is an integer number (161536788).

Almost surely, 2^1864452081 is an apocalyptic number.

It is an amenable number.

1864452081 is a deficient number, since it is larger than the sum of its proper divisors (720136527).

1864452081 is a wasteful number, since it uses less digits than its factorization.

1864452081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226352.

The product of its (nonzero) digits is 61440, while the sum is 39.

The square root of 1864452081 is about 43179.3015344158. The cubic root of 1864452081 is about 1230.7893848820.

The spelling of 1864452081 in words is "one billion, eight hundred sixty-four million, four hundred fifty-two thousand, eighty-one".