1948791 has 16 divisors (see below), whose sum is σ = 2830464. Its totient is φ = 1185504.

The previous prime is 1948789. The next prime is 1948799. The reversal of 1948791 is 1978491.

It is a happy number.

It is not a de Polignac number, because 1948791 - 2¹ = 1948789 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an Ulam number.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1948799) 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, 3940 + ... + 4406.

It is an arithmetic number, because the mean of its divisors is an integer number (176904).

2^1948791 is an apocalyptic number.

1948791 is a deficient number, since it is larger than the sum of its proper divisors (881673).

1948791 is a wasteful number, since it uses less digits than its factorization.

1948791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 590.

The product of its digits is 18144, while the sum is 39.

The square root of 1948791 is about 1395.9910458166. The cubic root of 1948791 is about 124.9074728601.

The spelling of 1948791 in words is "one million, nine hundred forty-eight thousand, seven hundred ninety-one".