191672134 has 8 divisors (see below), whose sum is σ = 288654408. Its totient is φ = 95454000.

The previous prime is 191672081. The next prime is 191672137. The reversal of 191672134 is 431276191.

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

It is a super-2 number, since 2×191672134² = 73476413904227912, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 191672134.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191672137) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190407 + ... + 191410.

It is an arithmetic number, because the mean of its divisors is an integer number (36081801).

Almost surely, 2^191672134 is an apocalyptic number.

191672134 is a deficient number, since it is larger than the sum of its proper divisors (96982274).

191672134 is a wasteful number, since it uses less digits than its factorization.

191672134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382070.

The product of its digits is 9072, while the sum is 34.

The square root of 191672134 is about 13844.5705603316. The cubic root of 191672134 is about 576.5712628359.

The spelling of 191672134 in words is "one hundred ninety-one million, six hundred seventy-two thousand, one hundred thirty-four".