10195380649 has 4 divisors (see below), whose sum is σ = 10300487764. Its totient is φ = 10090273536.

The previous prime is 10195380647. The next prime is 10195380667. The reversal of 10195380649 is 94608359101.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 7236564624 + 2958816025 = 85068^2 + 54395^2 .

It is a cyclic number.

It is not a de Polignac number, because 10195380649 - 2¹ = 10195380647 is a prime.

It is a super-2 number, since 2×10195380649² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10195380599 and 10195380608.

It is not an unprimeable number, because it can be changed into a prime (10195380647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52553412 + ... + 52553605.

It is an arithmetic number, because the mean of its divisors is an integer number (2575121941).

Almost surely, 2^10195380649 is an apocalyptic number.

It is an amenable number.

10195380649 is a deficient number, since it is larger than the sum of its proper divisors (105107115).

10195380649 is an equidigital number, since it uses as much as digits as its factorization.

10195380649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105107114.

The product of its (nonzero) digits is 233280, while the sum is 46.

The spelling of 10195380649 in words is "ten billion, one hundred ninety-five million, three hundred eighty thousand, six hundred forty-nine".