1611909434 has 8 divisors (see below), whose sum is σ = 2560091508. Its totient is φ = 758545600.

The previous prime is 1611909433. The next prime is 1611909493. The reversal of 1611909434 is 4349091161.

It can be written as a sum of positive squares in 2 ways, for example, as 1576328209 + 35581225 = 39703^2 + 5965^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (1611909433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23704517 + ... + 23704584.

Almost surely, 2^1611909434 is an apocalyptic number.

1611909434 is a deficient number, since it is larger than the sum of its proper divisors (948182074).

1611909434 is a wasteful number, since it uses less digits than its factorization.

1611909434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47409120.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 1611909434 is about 40148.5919304775. The cubic root of 1611909434 is about 1172.5018744808.

The spelling of 1611909434 in words is "one billion, six hundred eleven million, nine hundred nine thousand, four hundred thirty-four".