It is a strong prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-38994491769031 is a prime.
It is a congruent number.
Almost surely, 238994491769031 is an apocalyptic number.
38994491769031 is an equidigital number, since it uses as much as digits as its factorization.
38994491769031 is an evil number, because the sum of its binary digits is even.
The spelling of 38994491769031 in words is "thirty-eight trillion, nine hundred ninety-four billion, four hundred ninety-one million, seven hundred sixty-nine thousand, thirty-one".