1544539979 has 2 divisors, whose sum is σ = 1544539980. Its totient is φ = 1544539978.

The previous prime is 1544539967. The next prime is 1544540009. The reversal of 1544539979 is 9799354451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1544539979 - 2¹⁶ = 1544474443 is a prime.

It is not a weakly prime, because it can be changed into another prime (1544539379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 772269989 + 772269990.

It is an arithmetic number, because the mean of its divisors is an integer number (772269990).

Almost surely, 2^1544539979 is an apocalyptic number.

1544539979 is a deficient number, since it is larger than the sum of its proper divisors (1).

1544539979 is an equidigital number, since it uses as much as digits as its factorization.

1544539979 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6123600, while the sum is 56.

The square root of 1544539979 is about 39300.6358599960. The cubic root of 1544539979 is about 1155.9340355295.

The spelling of 1544539979 in words is "one billion, five hundred forty-four million, five hundred thirty-nine thousand, nine hundred seventy-nine".