949918643 has 2 divisors, whose sum is σ = 949918644. Its totient is φ = 949918642.

The previous prime is 949918631. The next prime is 949918679. The reversal of 949918643 is 346819949.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 949918643 - 2⁶ = 949918579 is a prime.

It is a super-2 number, since 2×949918643² = 1804690856637922898, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (949911643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474959321 + 474959322.

It is an arithmetic number, because the mean of its divisors is an integer number (474959322).

Almost surely, 2^949918643 is an apocalyptic number.

949918643 is a deficient number, since it is larger than the sum of its proper divisors (1).

949918643 is an equidigital number, since it uses as much as digits as its factorization.

949918643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1679616, while the sum is 53.

The square root of 949918643 is about 30820.7502017715. The cubic root of 949918643 is about 983.0195093040.

The spelling of 949918643 in words is "nine hundred forty-nine million, nine hundred eighteen thousand, six hundred forty-three".