949158261 has 12 divisors (see below), whose sum is σ = 1371276192. Its totient is φ = 632647656.

The previous prime is 949158253. The next prime is 949158269. The reversal of 949158261 is 162851949.

949158261 is a `hidden beast` number, since 9 + 4 + 9 + 1 + 582 + 61 = 666.

It is an interprime number because it is at equal distance from previous prime (949158253) and next prime (949158269).

It is not a de Polignac number, because 949158261 - 2³ = 949158253 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (949158269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74050 + ... + 85916.

It is an arithmetic number, because the mean of its divisors is an integer number (114273016).

Almost surely, 2^949158261 is an apocalyptic number.

It is an amenable number.

949158261 is a deficient number, since it is larger than the sum of its proper divisors (422117931).

949158261 is a wasteful number, since it uses less digits than its factorization.

949158261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20760 (or 20757 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 949158261 is about 30808.4121791435. The cubic root of 949158261 is about 982.7571465296.

The spelling of 949158261 in words is "nine hundred forty-nine million, one hundred fifty-eight thousand, two hundred sixty-one".