1611180667 has 4 divisors (see below), whose sum is σ = 1612301760. Its totient is φ = 1610059576.

The previous prime is 1611180647. The next prime is 1611180671. The reversal of 1611180667 is 7660811161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1611180667 - 2¹¹ = 1611178619 is a prime.

It is a super-4 number, since 4×1611180667⁴ (a number of 38 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1611180647) 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 3 ways as a sum of consecutive naturals, for example, 558388 + ... + 561265.

It is an arithmetic number, because the mean of its divisors is an integer number (403075440).

Almost surely, 2^1611180667 is an apocalyptic number.

1611180667 is a deficient number, since it is larger than the sum of its proper divisors (1121093).

1611180667 is a wasteful number, since it uses less digits than its factorization.

1611180667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1121092.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 1611180667 is about 40139.5150319483. The cubic root of 1611180667 is about 1172.3251462970.

The spelling of 1611180667 in words is "one billion, six hundred eleven million, one hundred eighty thousand, six hundred sixty-seven".