4019186193842 has 4 divisors (see below), whose sum is σ = 6028779290766. Its totient is φ = 2009593096920.

The previous prime is 4019186193787. The next prime is 4019186193877. The reversal of 4019186193842 is 2483916819104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2481062869321 + 1538123324521 = 1575139^2 + 1240211^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1004796548459 + ... + 1004796548462.

Almost surely, 2^{4019186193842} is an apocalyptic number.

4019186193842 is a deficient number, since it is larger than the sum of its proper divisors (2009593096924).

4019186193842 is a wasteful number, since it uses less digits than its factorization.

4019186193842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009593096923.

The product of its (nonzero) digits is 2985984, while the sum is 56.

The spelling of 4019186193842 in words is "four trillion, nineteen billion, one hundred eighty-six million, one hundred ninety-three thousand, eight hundred forty-two".