191863056452 has 6 divisors (see below), whose sum is σ = 335760348798. Its totient is φ = 95931528224.

The previous prime is 191863056433. The next prime is 191863056461. The reversal of 191863056452 is 254650368191.

It can be written as a sum of positive squares in only one way, i.e., 130108818436 + 61754238016 = 360706^2 + 248504^2 .

It is a super-2 number, since 2×191863056452² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 191863056452.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23982882053 + ... + 23982882060.

It is an arithmetic number, because the mean of its divisors is an integer number (55960058133).

Almost surely, 2^191863056452 is an apocalyptic number.

It is an amenable number.

191863056452 is a deficient number, since it is larger than the sum of its proper divisors (143897292346).

191863056452 is a wasteful number, since it uses less digits than its factorization.

191863056452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47965764117 (or 47965764115 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 50.

The spelling of 191863056452 in words is "one hundred ninety-one billion, eight hundred sixty-three million, fifty-six thousand, four hundred fifty-two".