94191631 has 2 divisors, whose sum is σ = 94191632. Its totient is φ = 94191630.

The previous prime is 94191571. The next prime is 94191641. The reversal of 94191631 is 13619149.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 94191631 - 2¹¹ = 94189583 is a prime.

It is a super-2 number, since 2×94191631² = 17744126700880322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (94191641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47095815 + 47095816.

It is an arithmetic number, because the mean of its divisors is an integer number (47095816).

Almost surely, 2^94191631 is an apocalyptic number.

94191631 is a deficient number, since it is larger than the sum of its proper divisors (1).

94191631 is an equidigital number, since it uses as much as digits as its factorization.

94191631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832, while the sum is 34.

The square root of 94191631 is about 9705.2372974596. The cubic root of 94191631 is about 454.9923615028.

The spelling of 94191631 in words is "ninety-four million, one hundred ninety-one thousand, six hundred thirty-one".