191154452 has 24 divisors (see below), whose sum is σ = 343136640. Its totient is φ = 93133440.

The previous prime is 191154451. The next prime is 191154503. The reversal of 191154452 is 254451191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191154451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43199 + ... + 47417.

It is an arithmetic number, because the mean of its divisors is an integer number (14297360).

Almost surely, 2^191154452 is an apocalyptic number.

It is an amenable number.

191154452 is a deficient number, since it is larger than the sum of its proper divisors (151982188).

191154452 is a wasteful number, since it uses less digits than its factorization.

191154452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4511 (or 4509 counting only the distinct ones).

The product of its digits is 7200, while the sum is 32.

The square root of 191154452 is about 13825.8617091305. The cubic root of 191154452 is about 576.0517129818.

The spelling of 191154452 in words is "one hundred ninety-one million, one hundred fifty-four thousand, four hundred fifty-two".