1949532541 has 4 divisors (see below), whose sum is σ = 2126762784. Its totient is φ = 1772302300.

The previous prime is 1949532527. The next prime is 1949532547. The reversal of 1949532541 is 1452359491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1949532541 - 2¹⁹ = 1949008253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1949532547) 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, 88615105 + ... + 88615126.

It is an arithmetic number, because the mean of its divisors is an integer number (531690696).

Almost surely, 2^1949532541 is an apocalyptic number.

1949532541 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1949532541 is a deficient number, since it is larger than the sum of its proper divisors (177230243).

1949532541 is a wasteful number, since it uses less digits than its factorization.

1949532541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177230242.

The product of its digits is 194400, while the sum is 43.

The square root of 1949532541 is about 44153.5110834914. The cubic root of 1949532541 is about 1249.2331383815.

The spelling of 1949532541 in words is "one billion, nine hundred forty-nine million, five hundred thirty-two thousand, five hundred forty-one".