1948551 has 16 divisors (see below), whose sum is σ = 2861568. Its totient is φ = 1169600.

The previous prime is 1948549. The next prime is 1948553. The reversal of 1948551 is 1558491.

It is an interprime number because it is at equal distance from previous prime (1948549) and next prime (1948553).

It is a cyclic number.

It is not a de Polignac number, because 1948551 - 2¹ = 1948549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

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 in 15 ways as a sum of consecutive naturals, for example, 4306 + ... + 4736.

It is an arithmetic number, because the mean of its divisors is an integer number (178848).

2^1948551 is an apocalyptic number.

1948551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1948551 is a deficient number, since it is larger than the sum of its proper divisors (913017).

1948551 is a wasteful number, since it uses less digits than its factorization.

1948551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582.

The product of its digits is 7200, while the sum is 33.

The square root of 1948551 is about 1395.9050827331. The cubic root of 1948551 is about 124.9023450613.

The spelling of 1948551 in words is "one million, nine hundred forty-eight thousand, five hundred fifty-one".