2148390500 has 24 divisors (see below), whose sum is σ = 4692085944. Its totient is φ = 859356000.

The previous prime is 2148390481. The next prime is 2148390523. The reversal of 2148390500 is 50938412.

It can be written as a sum of positive squares in 4 ways, for example, as 34597924 + 2113792576 = 5882^2 + 45976^2 .

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, 2147891 + ... + 2148890.

It is an arithmetic number, because the mean of its divisors is an integer number (195503581).

Almost surely, 2^2148390500 is an apocalyptic number.

2148390500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2148390500 is an abundant number, since it is smaller than the sum of its proper divisors (2543695444).

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

2148390500 is a wasteful number, since it uses less digits than its factorization.

2148390500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4296800 (or 4296788 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 2148390500 is about 46350.7335432785. The cubic root of 2148390500 is about 1290.3407348622.

The spelling of 2148390500 in words is "two billion, one hundred forty-eight million, three hundred ninety thousand, five hundred".