80181490 has 16 divisors (see below), whose sum is σ = 145652760. Its totient is φ = 31777920.

The previous prime is 80181487. The next prime is 80181499. The reversal of 80181490 is 9418108.

It can be written as a sum of positive squares in 4 ways, for example, as 54567769 + 25613721 = 7387^2 + 5061^2 .

It is not an unprimeable number, because it can be changed into a prime (80181499) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35691 + ... + 37870.

Almost surely, 2^80181490 is an apocalyptic number.

80181490 is a deficient number, since it is larger than the sum of its proper divisors (65471270).

80181490 is a wasteful number, since it uses less digits than its factorization.

80181490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73677.

The product of its (nonzero) digits is 2304, while the sum is 31.

The square root of 80181490 is about 8954.4117618077. The cubic root of 80181490 is about 431.2125322066.

Adding to 80181490 its reverse (9418108), we get a palindrome (89599598).

The spelling of 80181490 in words is "eighty million, one hundred eighty-one thousand, four hundred ninety".