191497286354 has 16 divisors (see below), whose sum is σ = 317651790240. Its totient is φ = 85851833760.

The previous prime is 191497286311. The next prime is 191497286359. The reversal of 191497286354 is 453682794191.

It is a happy number.

It is a super-2 number, since 2×191497286354² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 191497286293 and 191497286302.

It is not an unprimeable number, because it can be changed into a prime (191497286359) 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, 59617724 + ... + 59620935.

It is an arithmetic number, because the mean of its divisors is an integer number (19853236890).

Almost surely, 2^191497286354 is an apocalyptic number.

191497286354 is a deficient number, since it is larger than the sum of its proper divisors (126154503886).

191497286354 is a wasteful number, since it uses less digits than its factorization.

191497286354 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119238745.

The product of its digits is 13063680, while the sum is 59.

The spelling of 191497286354 in words is "one hundred ninety-one billion, four hundred ninety-seven million, two hundred eighty-six thousand, three hundred fifty-four".