950156981 has 2 divisors, whose sum is σ = 950156982. Its totient is φ = 950156980.

The previous prime is 950156941. The next prime is 950156989. The reversal of 950156981 is 189651059.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 918696100 + 31460881 = 30310^2 + 5609^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-950156981 is a prime.

It is a super-2 number, since 2×950156981² = 1805596577086068722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (950156989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 475078490 + 475078491.

It is an arithmetic number, because the mean of its divisors is an integer number (475078491).

Almost surely, 2^950156981 is an apocalyptic number.

It is an amenable number.

950156981 is a deficient number, since it is larger than the sum of its proper divisors (1).

950156981 is an equidigital number, since it uses as much as digits as its factorization.

950156981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 97200, while the sum is 44.

The square root of 950156981 is about 30824.6164777439. The cubic root of 950156981 is about 983.1017168044.

The spelling of 950156981 in words is "nine hundred fifty million, one hundred fifty-six thousand, nine hundred eighty-one".