1894445107349 has 4 divisors (see below), whose sum is σ = 1908273173964. Its totient is φ = 1880617040736.

The previous prime is 1894445107339. The next prime is 1894445107361. The reversal of 1894445107349 is 9437015444981.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1278070948324 + 616374159025 = 1130518^2 + 785095^2 .

It is a cyclic number.

It is not a de Polignac number, because 1894445107349 - 2⁴ = 1894445107333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1894445107339) 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, 6914033102 + ... + 6914033375.

It is an arithmetic number, because the mean of its divisors is an integer number (477068293491).

Almost surely, 2^{1894445107349} is an apocalyptic number.

It is an amenable number.

1894445107349 is a deficient number, since it is larger than the sum of its proper divisors (13828066615).

1894445107349 is a wasteful number, since it uses less digits than its factorization.

1894445107349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13828066614.

The product of its (nonzero) digits is 17418240, while the sum is 59.

The spelling of 1894445107349 in words is "one trillion, eight hundred ninety-four billion, four hundred forty-five million, one hundred seven thousand, three hundred forty-nine".