1992541 has 4 divisors (see below), whose sum is σ = 1995552. Its totient is φ = 1989532.

The previous prime is 1992533. The next prime is 1992547. The reversal of 1992541 is 1452991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1992541 - 2³ = 1992533 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a d-powerful number, because it can be written as 1 + 9² + 9⁴ + 2¹⁵ + 5⁹ + 4 + 1 .

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1992547) 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, 31 + ... + 1996.

It is an arithmetic number, because the mean of its divisors is an integer number (498888).

2^1992541 is an apocalyptic number.

It is an amenable number.

1992541 is a deficient number, since it is larger than the sum of its proper divisors (3011).

1992541 is an equidigital number, since it uses as much as digits as its factorization.

1992541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3010.

The product of its digits is 3240, while the sum is 31.

The square root of 1992541 is about 1411.5739442197. The cubic root of 1992541 is about 125.8352806837.

The spelling of 1992541 in words is "one million, nine hundred ninety-two thousand, five hundred forty-one".