155938963 has 2 divisors, whose sum is σ = 155938964. Its totient is φ = 155938962.

The previous prime is 155938961. The next prime is 155939009. The reversal of 155938963 is 369839551.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (369839551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155938963 - 2¹ = 155938961 is a prime.

Together with 155938961, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (155938961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77969481 + 77969482.

It is an arithmetic number, because the mean of its divisors is an integer number (77969482).

Almost surely, 2^155938963 is an apocalyptic number.

155938963 is a deficient number, since it is larger than the sum of its proper divisors (1).

155938963 is an equidigital number, since it uses as much as digits as its factorization.

155938963 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 874800, while the sum is 49.

The square root of 155938963 is about 12487.5523222127. The cubic root of 155938963 is about 538.2510436851.

The spelling of 155938963 in words is "one hundred fifty-five million, nine hundred thirty-eight thousand, nine hundred sixty-three".