1656366466 has 4 divisors (see below), whose sum is σ = 2484549702. Its totient is φ = 828183232.

The previous prime is 1656366463. The next prime is 1656366469. The reversal of 1656366466 is 6646636561.

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

It is an interprime number because it is at equal distance from previous prime (1656366463) and next prime (1656366469).

It can be written as a sum of positive squares in only one way, i.e., 1601680441 + 54686025 = 40021^2 + 7395^2 .

It is not an unprimeable number, because it can be changed into a prime (1656366463) 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 as a sum of consecutive naturals, namely, 414091615 + ... + 414091618.

Almost surely, 2^1656366466 is an apocalyptic number.

1656366466 is a deficient number, since it is larger than the sum of its proper divisors (828183236).

1656366466 is an equidigital number, since it uses as much as digits as its factorization.

1656366466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 828183235.

The product of its digits is 2799360, while the sum is 49.

The square root of 1656366466 is about 40698.4823549970. The cubic root of 1656366466 is about 1183.1836049573.

The spelling of 1656366466 in words is "one billion, six hundred fifty-six million, three hundred sixty-six thousand, four hundred sixty-six".