194445989741831 has 8 divisors (see below), whose sum is σ = 195434038611504. Its totient is φ = 193457951108800.

The previous prime is 194445989741803. The next prime is 194445989741891. The reversal of 194445989741831 is 138147989544491.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-194445989741831 is a prime.

It is a super-2 number, since 2×194445989741831² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (194445989741891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37083731 + ... + 42001131.

It is an arithmetic number, because the mean of its divisors is an integer number (24429254826438).

Almost surely, 2^{194445989741831} is an apocalyptic number.

194445989741831 is a deficient number, since it is larger than the sum of its proper divisors (988048869673).

194445989741831 is a wasteful number, since it uses less digits than its factorization.

194445989741831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5118321.

The product of its digits is 1254113280, while the sum is 77.

The spelling of 194445989741831 in words is "one hundred ninety-four trillion, four hundred forty-five billion, nine hundred eighty-nine million, seven hundred forty-one thousand, eight hundred thirty-one".