1194503944381 has 4 divisors (see below), whose sum is σ = 1303095212064. Its totient is φ = 1085912676700.

The previous prime is 1194503944367. The next prime is 1194503944411. The reversal of 1194503944381 is 1834493054911.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1194503944381 - 2²⁷ = 1194369726653 is a prime.

It is a super-2 number, since 2×1194503944381² (a number of 25 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 (1194500944381) 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, 54295633825 + ... + 54295633846.

It is an arithmetic number, because the mean of its divisors is an integer number (325773803016).

Almost surely, 2^{1194503944381} is an apocalyptic number.

1194503944381 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1194503944381 is a deficient number, since it is larger than the sum of its proper divisors (108591267683).

1194503944381 is a wasteful number, since it uses less digits than its factorization.

1194503944381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108591267682.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 1194503944381 in words is "one trillion, one hundred ninety-four billion, five hundred three million, nine hundred forty-four thousand, three hundred eighty-one".