1943958157 has 2 divisors, whose sum is σ = 1943958158. Its totient is φ = 1943958156.

The previous prime is 1943958127. The next prime is 1943958173. The reversal of 1943958157 is 7518593491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1814248836 + 129709321 = 42594^2 + 11389^2 .

It is a cyclic number.

It is not a de Polignac number, because 1943958157 - 2²³ = 1935569549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1943958127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 971979078 + 971979079.

It is an arithmetic number, because the mean of its divisors is an integer number (971979079).

Almost surely, 2^1943958157 is an apocalyptic number.

It is an amenable number.

1943958157 is a deficient number, since it is larger than the sum of its proper divisors (1).

1943958157 is an equidigital number, since it uses as much as digits as its factorization.

1943958157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1360800, while the sum is 52.

The square root of 1943958157 is about 44090.3408582878. The cubic root of 1943958157 is about 1248.0413393484.

The spelling of 1943958157 in words is "one billion, nine hundred forty-three million, nine hundred fifty-eight thousand, one hundred fifty-seven".