2541601969 has 4 divisors (see below), whose sum is σ = 2542718500. Its totient is φ = 2540485440.

The previous prime is 2541601883. The next prime is 2541601999. The reversal of 2541601969 is 9691061452.

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 1035230625 + 1506371344 = 32175^2 + 38812^2 .

It is a cyclic number.

It is not a de Polignac number, because 2541601969 - 2²¹ = 2539504817 is a prime.

It is a super-2 number, since 2×2541601969² = 12919481137649353922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2541601999) 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, 554844 + ... + 559405.

It is an arithmetic number, because the mean of its divisors is an integer number (635679625).

Almost surely, 2^2541601969 is an apocalyptic number.

It is an amenable number.

2541601969 is a deficient number, since it is larger than the sum of its proper divisors (1116531).

2541601969 is a wasteful number, since it uses less digits than its factorization.

2541601969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1116530.

The product of its (nonzero) digits is 116640, while the sum is 43.

The square root of 2541601969 is about 50414.3032184320. The cubic root of 2541601969 is about 1364.6957721186.

The spelling of 2541601969 in words is "two billion, five hundred forty-one million, six hundred one thousand, nine hundred sixty-nine".