191942061 has 16 divisors (see below), whose sum is σ = 267431424. Its totient is φ = 122223024.

The previous prime is 191942059. The next prime is 191942063. The reversal of 191942061 is 160249191.

It is an interprime number because it is at equal distance from previous prime (191942059) and next prime (191942063).

It is not a de Polignac number, because 191942061 - 2¹ = 191942059 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191942063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 61050 + ... + 64116.

It is an arithmetic number, because the mean of its divisors is an integer number (16714464).

Almost surely, 2^191942061 is an apocalyptic number.

It is an amenable number.

191942061 is a deficient number, since it is larger than the sum of its proper divisors (75489363).

191942061 is a wasteful number, since it uses less digits than its factorization.

191942061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4000.

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 191942061 is about 13854.3156092244. The cubic root of 191942061 is about 576.8417927725.

The spelling of 191942061 in words is "one hundred ninety-one million, nine hundred forty-two thousand, sixty-one".