1662541101 has 24 divisors (see below), whose sum is σ = 2591348760. Its totient is φ = 1021055616.

The previous prime is 1662541063. The next prime is 1662541141. The reversal of 1662541101 is 1011452661.

1662541101 is a `hidden beast` number, since 16 + 6 + 2 + 541 + 101 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 601475625 + 1061065476 = 24525^2 + 32574^2 .

It is not a de Polignac number, because 1662541101 - 2⁹ = 1662540589 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1662541141) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45595 + ... + 73511.

It is an arithmetic number, because the mean of its divisors is an integer number (107972865).

Almost surely, 2^1662541101 is an apocalyptic number.

It is an amenable number.

1662541101 is a deficient number, since it is larger than the sum of its proper divisors (928807659).

1662541101 is a wasteful number, since it uses less digits than its factorization.

1662541101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28445 (or 28442 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 1662541101 is about 40774.2700854350. The cubic root of 1662541101 is about 1184.6520134002.

Adding to 1662541101 its reverse (1011452661), we get a palindrome (2673993762).

The spelling of 1662541101 in words is "one billion, six hundred sixty-two million, five hundred forty-one thousand, one hundred one".