1662926841 has 45 divisors (see below), whose sum is σ = 2610075391. Its totient is φ = 1055034288.

The previous prime is 1662926807. The next prime is 1662926843. The reversal of 1662926841 is 1486292661.

The square root of 1662926841 is 40779.

It is a perfect power (a square), and thus also a powerful number.

1662926841 is a `hidden beast` number, since 16 + 629 + 2 + 6 + 8 + 4 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1629333225 + 33593616 = 40365^2 + 5796^2 .

It is not a de Polignac number, because 1662926841 - 2¹⁵ = 1662894073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1662926843) by changing a digit.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 8441155 + ... + 8441351.

Almost surely, 2^1662926841 is an apocalyptic number.

1662926841 is the 40779-th square number.

1662926841 is the 20390-th centered octagonal number.

It is an amenable number.

1662926841 is a deficient number, since it is larger than the sum of its proper divisors (947148550).

1662926841 is an frugal number, since it uses more digits than its factorization.

1662926841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452 (or 223 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The cubic root of 1662926841 is about 1184.7436266402.

The spelling of 1662926841 in words is "one billion, six hundred sixty-two million, nine hundred twenty-six thousand, eight hundred forty-one".