1992653 has 4 divisors (see below), whose sum is σ = 2145948. Its totient is φ = 1839360.

The previous prime is 1992643. The next prime is 1992673. The reversal of 1992653 is 3562991.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1283689 + 708964 = 1133^2 + 842^2 .

It is a cyclic number.

It is not a de Polignac number, because 1992653 - 2⁴ = 1992637 is a prime.

It is a d-powerful number, because it can be written as 1 + 9² + 9² + 2¹⁵ + 6² + 5⁹ + 3⁸ .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992623) 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, 76628 + ... + 76653.

It is an arithmetic number, because the mean of its divisors is an integer number (536487).

2^1992653 is an apocalyptic number.

1992653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1992653 is a deficient number, since it is larger than the sum of its proper divisors (153295).

1992653 is a wasteful number, since it uses less digits than its factorization.

1992653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153294.

The product of its digits is 14580, while the sum is 35.

The square root of 1992653 is about 1411.6136156895. The cubic root of 1992653 is about 125.8376383578.

It can be divided in two parts, 199265 and 3, that multiplied together give a palindrome (597795).

The spelling of 1992653 in words is "one million, nine hundred ninety-two thousand, six hundred fifty-three".