191424135494 has 8 divisors (see below), whose sum is σ = 287784367560. Its totient is φ = 95496012976.

The previous prime is 191424135467. The next prime is 191424135521. The reversal of 191424135494 is 494531424191.

It is an interprime number because it is at equal distance from previous prime (191424135467) and next prime (191424135521).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108026279 + ... + 108028050.

It is an arithmetic number, because the mean of its divisors is an integer number (35973045945).

Almost surely, 2^191424135494 is an apocalyptic number.

191424135494 is a deficient number, since it is larger than the sum of its proper divisors (96360232066).

191424135494 is a wasteful number, since it uses less digits than its factorization.

191424135494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216054774.

The product of its digits is 622080, while the sum is 47.

The spelling of 191424135494 in words is "one hundred ninety-one billion, four hundred twenty-four million, one hundred thirty-five thousand, four hundred ninety-four".