1802949 has 4 divisors (see below), whose sum is σ = 2403936. Its totient is φ = 1201964.

The previous prime is 1802923. The next prime is 1802989. The reversal of 1802949 is 9492081.

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 1802949 - 2⁷ = 1802821 is a prime.

It is a D-number.

1802949 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1802909) 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, 300489 + ... + 300494.

It is an arithmetic number, because the mean of its divisors is an integer number (600984).

2^1802949 is an apocalyptic number.

It is an amenable number.

1802949 is a deficient number, since it is larger than the sum of its proper divisors (600987).

1802949 is an equidigital number, since it uses as much as digits as its factorization.

1802949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 600986.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1802949 is about 1342.7393641359. The cubic root of 1802949 is about 121.7104348275.

The spelling of 1802949 in words is "one million, eight hundred two thousand, nine hundred forty-nine".