1948558 has 4 divisors (see below), whose sum is σ = 2922840. Its totient is φ = 974278.

The previous prime is 1948553. The next prime is 1948559. The reversal of 1948558 is 8558491.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 1948558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1948553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487138 + ... + 487141.

It is an arithmetic number, because the mean of its divisors is an integer number (730710).

2^1948558 is an apocalyptic number.

1948558 is a deficient number, since it is larger than the sum of its proper divisors (974282).

1948558 is an equidigital number, since it uses as much as digits as its factorization.

1948558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974281.

The product of its digits is 57600, while the sum is 40.

The square root of 1948558 is about 1395.9075900646. The cubic root of 1948558 is about 124.9024946281.

The spelling of 1948558 in words is "one million, nine hundred forty-eight thousand, five hundred fifty-eight".