1941171157 has 8 divisors (see below), whose sum is σ = 2043742400. Its totient is φ = 1838640384.

The previous prime is 1941171139. The next prime is 1941171187. The reversal of 1941171157 is 7511711491.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1941171157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1941171107) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 185653 + ... + 195829.

It is an arithmetic number, because the mean of its divisors is an integer number (255467800).

Almost surely, 2^1941171157 is an apocalyptic number.

It is an amenable number.

1941171157 is a deficient number, since it is larger than the sum of its proper divisors (102571243).

1941171157 is a wasteful number, since it uses less digits than its factorization.

1941171157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20235.

The product of its digits is 8820, while the sum is 37.

The square root of 1941171157 is about 44058.7239601875. The cubic root of 1941171157 is about 1247.4446264392. Note that the first 3 decimals are identical.

The spelling of 1941171157 in words is "one billion, nine hundred forty-one million, one hundred seventy-one thousand, one hundred fifty-seven".