1611442427 has 16 divisors (see below), whose sum is σ = 1973486592. Its totient is φ = 1284316800.

The previous prime is 1611442409. The next prime is 1611442439. The reversal of 1611442427 is 7242441161.

It is a cyclic number.

It is not a de Polignac number, because 1611442427 - 2¹⁸ = 1611180283 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1611442393 and 1611442402.

It is not an unprimeable number, because it can be changed into a prime (1611442487) 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, 71699 + ... + 91452.

It is an arithmetic number, because the mean of its divisors is an integer number (123342912).

Almost surely, 2^1611442427 is an apocalyptic number.

1611442427 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1611442427 is a deficient number, since it is larger than the sum of its proper divisors (362044165).

1611442427 is a wasteful number, since it uses less digits than its factorization.

1611442427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163258.

The product of its digits is 10752, while the sum is 32.

The square root of 1611442427 is about 40142.7755268616. The cubic root of 1611442427 is about 1172.3886300142.

Adding to 1611442427 its reverse (7242441161), we get a palindrome (8853883588).

The spelling of 1611442427 in words is "one billion, six hundred eleven million, four hundred forty-two thousand, four hundred twenty-seven".