147539937949 has 2 divisors, whose sum is σ = 147539937950. Its totient is φ = 147539937948.

The previous prime is 147539937913. The next prime is 147539937973. The reversal of 147539937949 is 949739935741.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 147509764900 + 30173049 = 384070^2 + 5493^2 .

It is an emirp because it is prime and its reverse (949739935741) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-147539937949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147539937989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73769968974 + 73769968975.

It is an arithmetic number, because the mean of its divisors is an integer number (73769968975).

Almost surely, 2^147539937949 is an apocalyptic number.

It is an amenable number.

147539937949 is a deficient number, since it is larger than the sum of its proper divisors (1).

147539937949 is an equidigital number, since it uses as much as digits as its factorization.

147539937949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 231472080, while the sum is 70.

The spelling of 147539937949 in words is "one hundred forty-seven billion, five hundred thirty-nine million, nine hundred thirty-seven thousand, nine hundred forty-nine".