191385829007 has 2 divisors, whose sum is σ = 191385829008. Its totient is φ = 191385829006.

The previous prime is 191385829003. The next prime is 191385829013. The reversal of 191385829007 is 700928583191.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 191385829007 - 2² = 191385829003 is a prime.

It is a super-3 number, since 3×191385829007³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 191385829007.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191385829003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95692914503 + 95692914504.

It is an arithmetic number, because the mean of its divisors is an integer number (95692914504).

Almost surely, 2^191385829007 is an apocalyptic number.

191385829007 is a deficient number, since it is larger than the sum of its proper divisors (1).

191385829007 is an equidigital number, since it uses as much as digits as its factorization.

191385829007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 53.

The spelling of 191385829007 in words is "one hundred ninety-one billion, three hundred eighty-five million, eight hundred twenty-nine thousand, seven".