80913019 has 16 divisors (see below), whose sum is σ = 90556416. Its totient is φ = 71676000.

The previous prime is 80913017. The next prime is 80913029. The reversal of 80913019 is 91031908.

It is not a de Polignac number, because 80913019 - 2¹ = 80913017 is a prime.

It is a super-2 number, since 2×80913019² = 13093833287388722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (80913017) 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, 73894 + ... + 74980.

It is an arithmetic number, because the mean of its divisors is an integer number (5659776).

Almost surely, 2^80913019 is an apocalyptic number.

80913019 is a deficient number, since it is larger than the sum of its proper divisors (9643397).

80913019 is a wasteful number, since it uses less digits than its factorization.

80913019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1266.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 80913019 is about 8995.1664242525. The cubic root of 80913019 is about 432.5199411657.

The spelling of 80913019 in words is "eighty million, nine hundred thirteen thousand, nineteen".