13542489949 has 2 divisors, whose sum is σ = 13542489950. Its totient is φ = 13542489948.

The previous prime is 13542489929. The next prime is 13542489967. The reversal of 13542489949 is 94998424531.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13431187449 + 111302500 = 115893^2 + 10550^2 .

It is a cyclic number.

It is not a de Polignac number, because 13542489949 - 2²⁷ = 13408272221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 13542489893 and 13542489902.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13542489929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6771244974 + 6771244975.

It is an arithmetic number, because the mean of its divisors is an integer number (6771244975).

Almost surely, 2^13542489949 is an apocalyptic number.

It is an amenable number.

13542489949 is a deficient number, since it is larger than the sum of its proper divisors (1).

13542489949 is an equidigital number, since it uses as much as digits as its factorization.

13542489949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11197440, while the sum is 58.

The spelling of 13542489949 in words is "thirteen billion, five hundred forty-two million, four hundred eighty-nine thousand, nine hundred forty-nine".