191472867 has 6 divisors (see below), whose sum is σ = 276571932. Its totient is φ = 127648572.

The previous prime is 191472857. The next prime is 191472881. The reversal of 191472867 is 768274191.

It is a happy number.

It is not a de Polignac number, because 191472867 - 2⁷ = 191472739 is a prime.

It is not an unprimeable number, because it can be changed into a prime (191472847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10637373 + ... + 10637390.

It is an arithmetic number, because the mean of its divisors is an integer number (46095322).

Almost surely, 2^191472867 is an apocalyptic number.

191472867 is a deficient number, since it is larger than the sum of its proper divisors (85099065).

191472867 is a wasteful number, since it uses less digits than its factorization.

191472867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21274769 (or 21274766 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 191472867 is about 13837.3721132302. The cubic root of 191472867 is about 576.3713877312.

The spelling of 191472867 in words is "one hundred ninety-one million, four hundred seventy-two thousand, eight hundred sixty-seven".