2541646516 has 6 divisors (see below), whose sum is σ = 4447881410. Its totient is φ = 1270823256.

The previous prime is 2541646483. The next prime is 2541646519. The reversal of 2541646516 is 6156461452.

It can be written as a sum of positive squares in only one way, i.e., 1976158116 + 565488400 = 44454^2 + 23780^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541646519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317705811 + ... + 317705818.

Almost surely, 2^2541646516 is an apocalyptic number.

It is an amenable number.

2541646516 is a deficient number, since it is larger than the sum of its proper divisors (1906234894).

2541646516 is a wasteful number, since it uses less digits than its factorization.

2541646516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 635411633 (or 635411631 counting only the distinct ones).

The product of its digits is 172800, while the sum is 40.

The square root of 2541646516 is about 50414.7450256371. The cubic root of 2541646516 is about 1364.7037451409.

The spelling of 2541646516 in words is "two billion, five hundred forty-one million, six hundred forty-six thousand, five hundred sixteen".