1611225914 has 4 divisors (see below), whose sum is σ = 2416838874. Its totient is φ = 805612956.

The previous prime is 1611225907. The next prime is 1611225929. The reversal of 1611225914 is 4195221161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4195221161 = 2687 ⋅1561303.

It can be written as a sum of positive squares in only one way, i.e., 1531391689 + 79834225 = 39133^2 + 8935^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 402806477 + ... + 402806480.

Almost surely, 2^1611225914 is an apocalyptic number.

1611225914 is a deficient number, since it is larger than the sum of its proper divisors (805612960).

1611225914 is an equidigital number, since it uses as much as digits as its factorization.

1611225914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805612959.

The product of its digits is 4320, while the sum is 32.

The square root of 1611225914 is about 40140.0786496489. The cubic root of 1611225914 is about 1172.3361203817.

The spelling of 1611225914 in words is "one billion, six hundred eleven million, two hundred twenty-five thousand, nine hundred fourteen".