1992464865 has 32 divisors (see below), whose sum is σ = 3664310400. Its totient is φ = 1026002880.

The previous prime is 1992464839. The next prime is 1992464927. The reversal of 1992464865 is 5684642991.

1992464865 is a `hidden beast` number, since 19 + 92 + 464 + 86 + 5 = 666.

It is not a de Polignac number, because 1992464865 - 2⁶ = 1992464801 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 250551 + ... + 258380.

It is an arithmetic number, because the mean of its divisors is an integer number (114509700).

Almost surely, 2^1992464865 is an apocalyptic number.

1992464865 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1992464865 is a deficient number, since it is larger than the sum of its proper divisors (1671845535).

1992464865 is a wasteful number, since it uses less digits than its factorization.

1992464865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 508974 (or 508968 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 54.

The square root of 1992464865 is about 44637.0346797365. The cubic root of 1992464865 is about 1258.3367794106.

The spelling of 1992464865 in words is "one billion, nine hundred ninety-two million, four hundred sixty-four thousand, eight hundred sixty-five".