1619046049 has 4 divisors (see below), whose sum is σ = 1641224836. Its totient is φ = 1596867264.

The previous prime is 1619046047. The next prime is 1619046053. The reversal of 1619046049 is 9406409161.

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 351187600 + 1267858449 = 18740^2 + 35607^2 .

It is a cyclic number.

It is not a de Polignac number, because 1619046049 - 2¹ = 1619046047 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1619046043) 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 in 3 ways as a sum of consecutive naturals, for example, 11089284 + ... + 11089429.

It is an arithmetic number, because the mean of its divisors is an integer number (410306209).

Almost surely, 2^1619046049 is an apocalyptic number.

It is an amenable number.

1619046049 is a deficient number, since it is larger than the sum of its proper divisors (22178787).

1619046049 is an equidigital number, since it uses as much as digits as its factorization.

1619046049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22178786.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 1619046049 is about 40237.3712983341. The cubic root of 1619046049 is about 1174.2297167216.

The spelling of 1619046049 in words is "one billion, six hundred nineteen million, forty-six thousand, forty-nine".