81794435 has 16 divisors (see below), whose sum is σ = 99677952. Its totient is φ = 64428000.

The previous prime is 81794431. The next prime is 81794437. The reversal of 81794435 is 53449718.

It is not a de Polignac number, because 81794435 - 2² = 81794431 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 81794392 and 81794401.

It is not an unprimeable number, because it can be changed into a prime (81794431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98492 + ... + 99318.

It is an arithmetic number, because the mean of its divisors is an integer number (6229872).

Almost surely, 2^81794435 is an apocalyptic number.

81794435 is a deficient number, since it is larger than the sum of its proper divisors (17883517).

81794435 is a wasteful number, since it uses less digits than its factorization.

81794435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1114.

The product of its digits is 120960, while the sum is 41.

The square root of 81794435 is about 9044.0275873087. The cubic root of 81794435 is about 434.0848068465.

The spelling of 81794435 in words is "eighty-one million, seven hundred ninety-four thousand, four hundred thirty-five".