494737081 has 4 divisors (see below), whose sum is σ = 494802000. Its totient is φ = 494672164.

The previous prime is 494737073. The next prime is 494737093. The reversal of 494737081 is 180737494.

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 494737081 - 2³ = 494737073 is a prime.

It is a super-2 number, since 2×494737081² = 489529558632801122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494737031) 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, 19231 + ... + 36868.

It is an arithmetic number, because the mean of its divisors is an integer number (123700500).

Almost surely, 2^494737081 is an apocalyptic number.

It is an amenable number.

494737081 is a deficient number, since it is larger than the sum of its proper divisors (64919).

494737081 is an equidigital number, since it uses as much as digits as its factorization.

494737081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64918.

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 494737081 is about 22242.6860113611. The cubic root of 494737081 is about 790.9059099833.

The spelling of 494737081 in words is "four hundred ninety-four million, seven hundred thirty-seven thousand, eighty-one".