199506151982 has 8 divisors (see below), whose sum is σ = 308912751552. Its totient is φ = 96535234800.

The previous prime is 199506151981. The next prime is 199506151993. The reversal of 199506151982 is 289151605991.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199506151981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1608920519 + ... + 1608920642.

It is an arithmetic number, because the mean of its divisors is an integer number (38614093944).

Almost surely, 2^199506151982 is an apocalyptic number.

199506151982 is a deficient number, since it is larger than the sum of its proper divisors (109406599570).

199506151982 is a wasteful number, since it uses less digits than its factorization.

199506151982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3217841194.

The product of its (nonzero) digits is 1749600, while the sum is 56.

The spelling of 199506151982 in words is "one hundred ninety-nine billion, five hundred six million, one hundred fifty-one thousand, nine hundred eighty-two".