103081449969 has 9 divisors (see below), whose sum is σ = 148896819019. Its totient is φ = 68720324520.

The previous prime is 103081449943. The next prime is 103081450001. The reversal of 103081449969 is 969944180301.

It is a happy number.

The square root of 103081449969 is 321063.

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

103081449969 is a `hidden beast` number, since 1 + 0 + 30 + 81 + 449 + 96 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2909199969 + 100172250000 = 53937^2 + 316500^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 103081449969 - 2¹³ = 103081441777 is a prime.

It is a super-2 number, since 2×103081449969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (103081449929) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 909679 + ... + 1016699.

Almost surely, 2^103081449969 is an apocalyptic number.

103081449969 is the 321063-rd square number.

103081449969 is the 160532-nd centered octagonal number.

It is an amenable number.

103081449969 is a deficient number, since it is larger than the sum of its proper divisors (45815369050).

103081449969 is an frugal number, since it uses more digits than its factorization.

103081449969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214048 (or 107024 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 103081449969 in words is "one hundred three billion, eighty-one million, four hundred forty-nine thousand, nine hundred sixty-nine".