801128151 has 40 divisors (see below), whose sum is σ = 1234926000. Its totient is φ = 517242240.

The previous prime is 801128147. The next prime is 801128197. The reversal of 801128151 is 151821108.

It is not a de Polignac number, because 801128151 - 2² = 801128147 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (801128101) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 494020 + ... + 495638.

It is an arithmetic number, because the mean of its divisors is an integer number (30873150).

Almost surely, 2^801128151 is an apocalyptic number.

801128151 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

801128151 is a deficient number, since it is larger than the sum of its proper divisors (433797849).

801128151 is a wasteful number, since it uses less digits than its factorization.

801128151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821 (or 1812 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 27.

The square root of 801128151 is about 28304.2073020956. The cubic root of 801128151 is about 928.7539295198.

Adding to 801128151 its reverse (151821108), we get a palindrome (952949259).

The spelling of 801128151 in words is "eight hundred one million, one hundred twenty-eight thousand, one hundred fifty-one".