191946472 has 8 divisors (see below), whose sum is σ = 359899650. Its totient is φ = 95973232.

The previous prime is 191946467. The next prime is 191946479. The reversal of 191946472 is 274649191.

It can be written as a sum of positive squares in only one way, i.e., 181872196 + 10074276 = 13486^2 + 3174^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×191946472² = 73686896226493568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (191946479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11996647 + ... + 11996662.

Almost surely, 2^191946472 is an apocalyptic number.

It is an amenable number.

191946472 is a deficient number, since it is larger than the sum of its proper divisors (167953178).

191946472 is a wasteful number, since it uses less digits than its factorization.

191946472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23993315 (or 23993311 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 191946472 is about 13854.4748005834. The cubic root of 191946472 is about 576.8462115185.

It can be divided in two parts, 19 and 1946472, that added together give a palindrome (1946491).

The spelling of 191946472 in words is "one hundred ninety-one million, nine hundred forty-six thousand, four hundred seventy-two".