949917851 has 2 divisors, whose sum is σ = 949917852. Its totient is φ = 949917850.

The previous prime is 949917847. The next prime is 949917869. The reversal of 949917851 is 158719949.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 949917851 - 2² = 949917847 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 949917793 and 949917802.

It is not a weakly prime, because it can be changed into another prime (949917821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474958925 + 474958926.

It is an arithmetic number, because the mean of its divisors is an integer number (474958926).

Almost surely, 2^949917851 is an apocalyptic number.

949917851 is a deficient number, since it is larger than the sum of its proper divisors (1).

949917851 is an equidigital number, since it uses as much as digits as its factorization.

949917851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 816480, while the sum is 53.

The square root of 949917851 is about 30820.7373532821. The cubic root of 949917851 is about 983.0192361046.

The spelling of 949917851 in words is "nine hundred forty-nine million, nine hundred seventeen thousand, eight hundred fifty-one".