1619242009 has 16 divisors (see below), whose sum is σ = 2020469760. Its totient is φ = 1260700560.

The previous prime is 1619241991. The next prime is 1619242019. The reversal of 1619242009 is 9002429161.

It is not a de Polignac number, because 1619242009 - 2⁵ = 1619241977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1619242019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92262 + ... + 108400.

It is an arithmetic number, because the mean of its divisors is an integer number (126279360).

Almost surely, 2^1619242009 is an apocalyptic number.

It is an amenable number.

1619242009 is a deficient number, since it is larger than the sum of its proper divisors (401227751).

1619242009 is a wasteful number, since it uses less digits than its factorization.

1619242009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17460.

The product of its (nonzero) digits is 7776, while the sum is 34.

The square root of 1619242009 is about 40239.8062743846. The cubic root of 1619242009 is about 1174.2770888090.

The spelling of 1619242009 in words is "one billion, six hundred nineteen million, two hundred forty-two thousand, nine".