1948281 has 4 divisors (see below), whose sum is σ = 2597712. Its totient is φ = 1298852.

The previous prime is 1948273. The next prime is 1948283. The reversal of 1948281 is 1828491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1948281 - 2³ = 1948273 is a prime.

It is a super-2 number, since 2×1948281² = 7591597709922, which contains 22 as substring.

It is a D-number.

It is a nialpdrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (1948283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324711 + ... + 324716.

It is an arithmetic number, because the mean of its divisors is an integer number (649428).

2^1948281 is an apocalyptic number.

It is an amenable number.

1948281 is a deficient number, since it is larger than the sum of its proper divisors (649431).

1948281 is an equidigital number, since it uses as much as digits as its factorization.

1948281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649430.

The product of its digits is 4608, while the sum is 33.

The square root of 1948281 is about 1395.8083679359. The cubic root of 1948281 is about 124.8965757844.

The spelling of 1948281 in words is "one million, nine hundred forty-eight thousand, two hundred eighty-one".