1611103641 has 32 divisors (see below), whose sum is σ = 2505968640. Its totient is φ = 901682496.

The previous prime is 1611103633. The next prime is 1611103657. The reversal of 1611103641 is 1463011161.

It is not a de Polignac number, because 1611103641 - 2³ = 1611103633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1611103441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 248655 + ... + 255051.

It is an arithmetic number, because the mean of its divisors is an integer number (78311520).

Almost surely, 2^1611103641 is an apocalyptic number.

It is an amenable number.

1611103641 is a deficient number, since it is larger than the sum of its proper divisors (894864999).

1611103641 is a wasteful number, since it uses less digits than its factorization.

1611103641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6653.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1611103641 is about 40138.5555420222. Note that the first 4 decimals coincide. The cubic root of 1611103641 is about 1172.3064641472.

The spelling of 1611103641 in words is "one billion, six hundred eleven million, one hundred three thousand, six hundred forty-one".