1611142604 has 6 divisors (see below), whose sum is σ = 2819499564. Its totient is φ = 805571300.

The previous prime is 1611142597. The next prime is 1611142609. The reversal of 1611142604 is 4062411161.

It is not an unprimeable number, because it can be changed into a prime (1611142609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201392822 + ... + 201392829.

It is an arithmetic number, because the mean of its divisors is an integer number (469916594).

Almost surely, 2^1611142604 is an apocalyptic number.

It is an amenable number.

1611142604 is a deficient number, since it is larger than the sum of its proper divisors (1208356960).

1611142604 is a wasteful number, since it uses less digits than its factorization.

1611142604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402785655 (or 402785653 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1611142604 is about 40139.0408953677. The cubic root of 1611142604 is about 1172.3159144411.

Adding to 1611142604 its reverse (4062411161), we get a palindrome (5673553765).

The spelling of 1611142604 in words is "one billion, six hundred eleven million, one hundred forty-two thousand, six hundred four".