994261157 has 2 divisors, whose sum is σ = 994261158. Its totient is φ = 994261156.

The previous prime is 994261129. The next prime is 994261183. The reversal of 994261157 is 751162499.

994261157 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 888397636 + 105863521 = 29806^2 + 10289^2 .

It is an emirp because it is prime and its reverse (751162499) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 994261157 - 2²² = 990066853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (994261657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497130578 + 497130579.

It is an arithmetic number, because the mean of its divisors is an integer number (497130579).

Almost surely, 2^994261157 is an apocalyptic number.

It is an amenable number.

994261157 is a deficient number, since it is larger than the sum of its proper divisors (1).

994261157 is an equidigital number, since it uses as much as digits as its factorization.

994261157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 44.

The square root of 994261157 is about 31531.9069673878. The cubic root of 994261157 is about 998.0833812528.

The spelling of 994261157 in words is "nine hundred ninety-four million, two hundred sixty-one thousand, one hundred fifty-seven".