1611613742 has 4 divisors (see below), whose sum is σ = 2417420616. Its totient is φ = 805806870.

The previous prime is 1611613711. The next prime is 1611613747. The reversal of 1611613742 is 2473161161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2473161161 = 3359 ⋅736279.

It is a junction number, because it is equal to n+sod(n) for n = 1611613699 and 1611613708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1611613747) 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 as a sum of consecutive naturals, namely, 402903434 + ... + 402903437.

It is an arithmetic number, because the mean of its divisors is an integer number (604355154).

Almost surely, 2^1611613742 is an apocalyptic number.

1611613742 is a deficient number, since it is larger than the sum of its proper divisors (805806874).

1611613742 is an equidigital number, since it uses as much as digits as its factorization.

1611613742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805806873.

The product of its digits is 6048, while the sum is 32.

The square root of 1611613742 is about 40144.9092912165. The cubic root of 1611613742 is about 1172.4301747069.

The spelling of 1611613742 in words is "one billion, six hundred eleven million, six hundred thirteen thousand, seven hundred forty-two".