649358541 has 12 divisors (see below), whose sum is σ = 1010113468. Its totient is φ = 399605184.

The previous prime is 649358509. The next prime is 649358599. The reversal of 649358541 is 145853946.

649358541 is a `hidden beast` number, since 64 + 9 + 3 + 585 + 4 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 43164900 + 606193641 = 6570^2 + 24621^2 .

It is not a de Polignac number, because 649358541 - 2⁵ = 649358509 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (649356541) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2774920 + ... + 2775153.

Almost surely, 2^649358541 is an apocalyptic number.

It is an amenable number.

649358541 is a deficient number, since it is larger than the sum of its proper divisors (360754927).

649358541 is a wasteful number, since it uses less digits than its factorization.

649358541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5550092 (or 5550089 counting only the distinct ones).

The product of its digits is 518400, while the sum is 45.

The square root of 649358541 is about 25482.5144167525. The cubic root of 649358541 is about 865.9540593123.

The spelling of 649358541 in words is "six hundred forty-nine million, three hundred fifty-eight thousand, five hundred forty-one".