191379040 has 24 divisors (see below), whose sum is σ = 452133360. Its totient is φ = 76551552.

The previous prime is 191379031. The next prime is 191379043. The reversal of 191379040 is 40973191.

It is a super-3 number, since 3×191379040³ (a number of 26 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 191378987 and 191379005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191379043) 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, 597900 + ... + 598219.

It is an arithmetic number, because the mean of its divisors is an integer number (18838890).

Almost surely, 2^191379040 is an apocalyptic number.

191379040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

191379040 is an abundant number, since it is smaller than the sum of its proper divisors (260754320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

191379040 is a wasteful number, since it uses less digits than its factorization.

191379040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1196134 (or 1196126 counting only the distinct ones).

The product of its (nonzero) digits is 6804, while the sum is 34.

The square root of 191379040 is about 13833.9813502838. The cubic root of 191379040 is about 576.2772263758.

The spelling of 191379040 in words is "one hundred ninety-one million, three hundred seventy-nine thousand, forty".