1611151349 has 4 divisors (see below), whose sum is σ = 1611234636. Its totient is φ = 1611068064.

The previous prime is 1611151327. The next prime is 1611151369. The reversal of 1611151349 is 9431511161.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 330585124 + 1280566225 = 18182^2 + 35785^2 .

It is a cyclic number.

It is not a de Polignac number, because 1611151349 - 2¹⁶ = 1611085813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611151309) 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, 4187 + ... + 56919.

It is an arithmetic number, because the mean of its divisors is an integer number (402808659).

Almost surely, 2^1611151349 is an apocalyptic number.

It is an amenable number.

1611151349 is a deficient number, since it is larger than the sum of its proper divisors (83287).

1611151349 is an equidigital number, since it uses as much as digits as its factorization.

1611151349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83286.

The product of its digits is 3240, while the sum is 32.

The square root of 1611151349 is about 40139.1498290634. The cubic root of 1611151349 is about 1172.3180354791.

The spelling of 1611151349 in words is "one billion, six hundred eleven million, one hundred fifty-one thousand, three hundred forty-nine".