801581079 has 8 divisors (see below), whose sum is σ = 1150988272. Its totient is φ = 493280640.

The previous prime is 801581071. The next prime is 801581087. The reversal of 801581079 is 970185108.

It is an interprime number because it is at equal distance from previous prime (801581071) and next prime (801581087).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 801581079 - 2³ = 801581071 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 20553361 = 801581079 / (8 + 0 + 1 + 5 + 8 + 1 + 0 + 7 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801581071) 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, 10276642 + ... + 10276719.

It is an arithmetic number, because the mean of its divisors is an integer number (143873534).

Almost surely, 2^801581079 is an apocalyptic number.

801581079 is a deficient number, since it is larger than the sum of its proper divisors (349407193).

801581079 is a wasteful number, since it uses less digits than its factorization.

801581079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20553377.

The product of its (nonzero) digits is 20160, while the sum is 39.

The square root of 801581079 is about 28312.2072435195. The cubic root of 801581079 is about 928.9289241651.

The spelling of 801581079 in words is "eight hundred one million, five hundred eighty-one thousand, seventy-nine".