1921492 has 6 divisors (see below), whose sum is σ = 3362618. Its totient is φ = 960744.

The previous prime is 1921483. The next prime is 1921499. The reversal of 1921492 is 2941291.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1758276 + 163216 = 1326^2 + 404^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1921492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1921499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240183 + ... + 240190.

2^1921492 is an apocalyptic number.

It is an amenable number.

1921492 is a deficient number, since it is larger than the sum of its proper divisors (1441126).

1921492 is a wasteful number, since it uses less digits than its factorization.

1921492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480377 (or 480375 counting only the distinct ones).

The product of its digits is 1296, while the sum is 28.

The square root of 1921492 is about 1386.1789206304. The cubic root of 1921492 is about 124.3214862838.

It can be divided in two parts, 19214 and 92, that added together give a triangular number (19306 = T₁₉₆).

The spelling of 1921492 in words is "one million, nine hundred twenty-one thousand, four hundred ninety-two".