191157043 has 32 divisors (see below), whose sum is σ = 252541440. Its totient is φ = 140175360.

The previous prime is 191157041. The next prime is 191157053. The reversal of 191157043 is 340751191.

It is a cyclic number.

It is not a de Polignac number, because 191157043 - 2¹ = 191157041 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 191156996 and 191157014.

It is not an unprimeable number, because it can be changed into a prime (191157041) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282021 + ... + 282697.

It is an arithmetic number, because the mean of its divisors is an integer number (7891920).

Almost surely, 2^191157043 is an apocalyptic number.

191157043 is a deficient number, since it is larger than the sum of its proper divisors (61384397).

191157043 is a wasteful number, since it uses less digits than its factorization.

191157043 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 907.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 191157043 is about 13825.9554100250. The cubic root of 191157043 is about 576.0543156647.

The spelling of 191157043 in words is "one hundred ninety-one million, one hundred fifty-seven thousand, forty-three".