1661460511 has 8 divisors (see below), whose sum is σ = 1670653440. Its totient is φ = 1652293632.

The previous prime is 1661460503. The next prime is 1661460527. The reversal of 1661460511 is 1150641661.

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 1661460511 - 2³ = 1661460503 is a prime.

It is a super-2 number, since 2×1661460511² = 5520902059224762242, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1661460571) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 129055 + ... + 141343.

It is an arithmetic number, because the mean of its divisors is an integer number (208831680).

Almost surely, 2^1661460511 is an apocalyptic number.

1661460511 is a deficient number, since it is larger than the sum of its proper divisors (9192929).

1661460511 is a wasteful number, since it uses less digits than its factorization.

1661460511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13025.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1661460511 is about 40761.0170506085. The cubic root of 1661460511 is about 1184.3952978293.

The spelling of 1661460511 in words is "one billion, six hundred sixty-one million, four hundred sixty thousand, five hundred eleven".