19202049 has 8 divisors (see below), whose sum is σ = 28447520. Its totient is φ = 12801348.

The previous prime is 19202041. The next prime is 19202069. The reversal of 19202049 is 94020291.

It is not a de Polignac number, because 19202049 - 2³ = 19202041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 711187 = 19202049 / (1 + 9 + 2 + 0 + 2 + 0 + 4 + 9).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (19202041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 355567 + ... + 355620.

It is an arithmetic number, because the mean of its divisors is an integer number (3555940).

It is a Proth number, since it is equal to 293 ⋅ 2¹⁶ + 1 and 293 < 2¹⁶.

Almost surely, 2^19202049 is an apocalyptic number.

It is an amenable number.

19202049 is a deficient number, since it is larger than the sum of its proper divisors (9245471).

19202049 is an equidigital number, since it uses as much as digits as its factorization.

19202049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711196 (or 711190 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 19202049 is about 4382.0142628704. The cubic root of 19202049 is about 267.7827051671.

It can be divided in two parts, 1920 and 2049, that added together give a square (3969 = 63²).

The spelling of 19202049 in words is "nineteen million, two hundred two thousand, forty-nine".