2148365840 has 20 divisors (see below), whose sum is σ = 4994950764. Its totient is φ = 859346304.

The previous prime is 2148365833. The next prime is 2148365851. The reversal of 2148365840 is 485638412.

It can be written as a sum of positive squares in 2 ways, for example, as 1263660304 + 884705536 = 35548^2 + 29744^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13427207 + ... + 13427366.

Almost surely, 2^2148365840 is an apocalyptic number.

2148365840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2148365840 is an abundant number, since it is smaller than the sum of its proper divisors (2846584924).

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

2148365840 is a wasteful number, since it uses less digits than its factorization.

2148365840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26854586 (or 26854580 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 41.

The square root of 2148365840 is about 46350.4675273076. The cubic root of 2148365840 is about 1290.3357978447.

The spelling of 2148365840 in words is "two billion, one hundred forty-eight million, three hundred sixty-five thousand, eight hundred forty".