191401740030 has 32 divisors (see below), whose sum is σ = 459379324800. Its totient is φ = 51038780832.

The previous prime is 191401739999. The next prime is 191401740031. The reversal of 191401740030 is 30047104191.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a self number, because there is not a number n which added to its sum of digits gives 191401740030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (191401740031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1015341 + ... + 1188999.

It is an arithmetic number, because the mean of its divisors is an integer number (14355603900).

Almost surely, 2^191401740030 is an apocalyptic number.

191401740030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

191401740030 is an abundant number, since it is smaller than the sum of its proper divisors (267977584770).

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

191401740030 is a wasteful number, since it uses less digits than its factorization.

191401740030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210408.

The product of its (nonzero) digits is 3024, while the sum is 30.

The spelling of 191401740030 in words is "one hundred ninety-one billion, four hundred one million, seven hundred forty thousand, thirty".