2148548381 has 16 divisors (see below), whose sum is σ = 2566502400. Its totient is φ = 1758615408.

The previous prime is 2148548359. The next prime is 2148548387. The reversal of 2148548381 is 1838458412.

It is a cyclic number.

It is not a de Polignac number, because 2148548381 - 2¹⁸ = 2148286237 is a prime.

It is a super-2 number, since 2×2148548381² = 9232520290995442322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148548387) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88880 + ... + 110438.

It is an arithmetic number, because the mean of its divisors is an integer number (160406400).

Almost surely, 2^2148548381 is an apocalyptic number.

It is an amenable number.

2148548381 is a deficient number, since it is larger than the sum of its proper divisors (417954019).

2148548381 is a wasteful number, since it uses less digits than its factorization.

2148548381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22208.

The product of its digits is 245760, while the sum is 44.

The square root of 2148548381 is about 46352.4366241948. The cubic root of 2148548381 is about 1290.3723422904.

The spelling of 2148548381 in words is "two billion, one hundred forty-eight million, five hundred forty-eight thousand, three hundred eighty-one".