190444946815 has 16 divisors (see below), whose sum is σ = 233618734080. Its totient is φ = 148972269600.

The previous prime is 190444946789. The next prime is 190444946819. The reversal of 190444946815 is 518649444091.

It is a de Polignac number, because none of the positive numbers 2^k-190444946815 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (190444946819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 138555 + ... + 632524.

It is an arithmetic number, because the mean of its divisors is an integer number (14601170880).

Almost surely, 2^190444946815 is an apocalyptic number.

190444946815 is a deficient number, since it is larger than the sum of its proper divisors (43173787265).

190444946815 is a wasteful number, since it uses less digits than its factorization.

190444946815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 772182.

The product of its (nonzero) digits is 4976640, while the sum is 55.

The spelling of 190444946815 in words is "one hundred ninety billion, four hundred forty-four million, nine hundred forty-six thousand, eight hundred fifteen".