1611167641 has 8 divisors (see below), whose sum is σ = 1688762880. Its totient is φ = 1534201152.

The previous prime is 1611167629. The next prime is 1611167647. The reversal of 1611167641 is 1467611161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1611167641 - 2⁷ = 1611167513 is a prime.

It is a super-2 number, since 2×1611167641² = 5191722334811009762, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1611167597 and 1611167606.

It is not an unprimeable number, because it can be changed into a prime (1611167647) 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 in 7 ways as a sum of consecutive naturals, for example, 151936 + ... + 162193.

It is an arithmetic number, because the mean of its divisors is an integer number (211095360).

Almost surely, 2^1611167641 is an apocalyptic number.

It is an amenable number.

1611167641 is a deficient number, since it is larger than the sum of its proper divisors (77595239).

1611167641 is a wasteful number, since it uses less digits than its factorization.

1611167641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314375.

The product of its digits is 6048, while the sum is 34.

The square root of 1611167641 is about 40139.3527725597. The cubic root of 1611167641 is about 1172.3219869682.

The spelling of 1611167641 in words is "one billion, six hundred eleven million, one hundred sixty-seven thousand, six hundred forty-one".