201293103649 has 9 divisors (see below), whose sum is σ = 221261480881. Its totient is φ = 182989244020.

The previous prime is 201293103643. The next prime is 201293103673. The reversal of 201293103649 is 946301392102.

The square root of 201293103649 is 448657.

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

It is not a de Polignac number, because 201293103649 - 2⁷ = 201293103521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201293103643) 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, 4914834 + ... + 4955620.

Almost surely, 2^201293103649 is an apocalyptic number.

201293103649 is the 448657-th square number.

201293103649 is the 224329-th centered octagonal number.

It is an amenable number.

201293103649 is a deficient number, since it is larger than the sum of its proper divisors (19968377232).

201293103649 is an frugal number, since it uses more digits than its factorization.

201293103649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81596 (or 40798 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 40.

The spelling of 201293103649 in words is "two hundred one billion, two hundred ninety-three million, one hundred three thousand, six hundred forty-nine".