39149542357 has 2 divisors, whose sum is σ = 39149542358. Its totient is φ = 39149542356.

The previous prime is 39149542349. The next prime is 39149542387. The reversal of 39149542357 is 75324594193.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33448386321 + 5701156036 = 182889^2 + 75506^2 .

It is a cyclic number.

It is not a de Polignac number, because 39149542357 - 2³ = 39149542349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (39149542387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19574771178 + 19574771179.

It is an arithmetic number, because the mean of its divisors is an integer number (19574771179).

Almost surely, 2^39149542357 is an apocalyptic number.

It is an amenable number.

39149542357 is a deficient number, since it is larger than the sum of its proper divisors (1).

39149542357 is an equidigital number, since it uses as much as digits as its factorization.

39149542357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4082400, while the sum is 52.

The spelling of 39149542357 in words is "thirty-nine billion, one hundred forty-nine million, five hundred forty-two thousand, three hundred fifty-seven".