995557813 has 2 divisors, whose sum is σ = 995557814. Its totient is φ = 995557812.

The previous prime is 995557789. The next prime is 995557817. The reversal of 995557813 is 318755599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 870073009 + 125484804 = 29497^2 + 11202^2 .

It is a cyclic number.

It is not a de Polignac number, because 995557813 - 2⁹ = 995557301 is a prime.

It is a super-2 number, since 2×995557813² = 1982270718050685938, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (995557817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 497778906 + 497778907.

It is an arithmetic number, because the mean of its divisors is an integer number (497778907).

Almost surely, 2^995557813 is an apocalyptic number.

It is an amenable number.

995557813 is a deficient number, since it is larger than the sum of its proper divisors (1).

995557813 is an equidigital number, since it uses as much as digits as its factorization.

995557813 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1701000, while the sum is 52.

The square root of 995557813 is about 31552.4612827589. The cubic root of 995557813 is about 998.5170730146.

The spelling of 995557813 in words is "nine hundred ninety-five million, five hundred fifty-seven thousand, eight hundred thirteen".