229191957 has 32 divisors (see below), whose sum is σ = 344937600. Its totient is φ = 150391296.

The previous prime is 229191953. The next prime is 229191961. The reversal of 229191957 is 759191922.

It is an interprime number because it is at equal distance from previous prime (229191953) and next prime (229191961).

It is not a de Polignac number, because 229191957 - 2² = 229191953 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (229191953) 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 31 ways as a sum of consecutive naturals, for example, 649093 + ... + 649445.

It is an arithmetic number, because the mean of its divisors is an integer number (10779300).

Almost surely, 2^229191957 is an apocalyptic number.

229191957 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

229191957 is a deficient number, since it is larger than the sum of its proper divisors (115745643).

229191957 is a wasteful number, since it uses less digits than its factorization.

229191957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 674 (or 668 counting only the distinct ones).

The product of its digits is 102060, while the sum is 45.

The square root of 229191957 is about 15139.0870596612. The cubic root of 229191957 is about 611.9742155611.

The spelling of 229191957 in words is "two hundred twenty-nine million, one hundred ninety-one thousand, nine hundred fifty-seven".