2145475992 has 64 divisors (see below), whose sum is σ = 5908181760. Its totient is φ = 643824000.

The previous prime is 2145475979. The next prime is 2145476017. The reversal of 2145475992 is 2995745412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12259 + ... + 66642.

It is an arithmetic number, because the mean of its divisors is an integer number (92315340).

Almost surely, 2^2145475992 is an apocalyptic number.

2145475992 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2145475992 is an abundant number, since it is smaller than the sum of its proper divisors (3762705768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145475992 is a wasteful number, since it uses less digits than its factorization.

2145475992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79024 (or 79020 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 2145475992 is about 46319.2831550748. The cubic root of 2145475992 is about 1289.7569784376.

The spelling of 2145475992 in words is "two billion, one hundred forty-five million, four hundred seventy-five thousand, nine hundred ninety-two".