1362151666 has 4 divisors (see below), whose sum is σ = 2043227502. Its totient is φ = 681075832.

The previous prime is 1362151643. The next prime is 1362151669. The reversal of 1362151666 is 6661512631.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6661512631 = 42379 ⋅157189.

It can be written as a sum of positive squares in only one way, i.e., 922033225 + 440118441 = 30365^2 + 20979^2 .

It is a super-2 number, since 2×1362151666² = 3710914322373151112, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1362151669) 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, 340537915 + ... + 340537918.

Almost surely, 2^1362151666 is an apocalyptic number.

1362151666 is a deficient number, since it is larger than the sum of its proper divisors (681075836).

1362151666 is an equidigital number, since it uses as much as digits as its factorization.

1362151666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681075835.

The product of its digits is 38880, while the sum is 37.

The square root of 1362151666 is about 36907.3389178900. The cubic root of 1362151666 is about 1108.5156324229.

The spelling of 1362151666 in words is "one billion, three hundred sixty-two million, one hundred fifty-one thousand, six hundred sixty-six".