1662155347 has 4 divisors (see below), whose sum is σ = 1662245200. Its totient is φ = 1662065496.

The previous prime is 1662155317. The next prime is 1662155351. The reversal of 1662155347 is 7435512661.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 7435512661 = 113 ⋅65800997.

It is a cyclic number.

It is not a de Polignac number, because 1662155347 - 2⁷ = 1662155219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1662155317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5847 + ... + 57952.

It is an arithmetic number, because the mean of its divisors is an integer number (415561300).

Almost surely, 2^1662155347 is an apocalyptic number.

1662155347 is a deficient number, since it is larger than the sum of its proper divisors (89853).

1662155347 is an equidigital number, since it uses as much as digits as its factorization.

1662155347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89852.

The product of its digits is 151200, while the sum is 40.

The square root of 1662155347 is about 40769.5394504279. The cubic root of 1662155347 is about 1184.5603826627.

The spelling of 1662155347 in words is "one billion, six hundred sixty-two million, one hundred fifty-five thousand, three hundred forty-seven".