1662045801 has 16 divisors (see below), whose sum is σ = 2409703296. Its totient is φ = 1012864896.

The previous prime is 1662045793. The next prime is 1662045829. The reversal of 1662045801 is 1085402661.

It is not a de Polignac number, because 1662045801 - 2³ = 1662045793 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1662035801) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 202860 + ... + 210893.

It is an arithmetic number, because the mean of its divisors is an integer number (150606456).

Almost surely, 2^1662045801 is an apocalyptic number.

It is an amenable number.

1662045801 is a deficient number, since it is larger than the sum of its proper divisors (747657495).

1662045801 is a wasteful number, since it uses less digits than its factorization.

1662045801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413872.

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 1662045801 is about 40768.1959497842. The cubic root of 1662045801 is about 1184.5343588812.

The spelling of 1662045801 in words is "one billion, six hundred sixty-two million, forty-five thousand, eight hundred one".