807629381 has 8 divisors (see below), whose sum is σ = 899746680. Its totient is φ = 719796672.

The previous prime is 807629363. The next prime is 807629393. The reversal of 807629381 is 183926708.

It can be written as a sum of positive squares in 4 ways, for example, as 129026881 + 678602500 = 11359^2 + 26050^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 807629381 - 2¹⁴ = 807612997 is a prime.

It is a super-2 number, since 2×807629381² = 1304530434108886322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (807629351) 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, 1070750 + ... + 1071503.

It is an arithmetic number, because the mean of its divisors is an integer number (112468335).

Almost surely, 2^807629381 is an apocalyptic number.

It is an amenable number.

807629381 is a deficient number, since it is larger than the sum of its proper divisors (92117299).

807629381 is a wasteful number, since it uses less digits than its factorization.

807629381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2142295.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 807629381 is about 28418.8208939076. The cubic root of 807629381 is about 931.2594725040.

The spelling of 807629381 in words is "eight hundred seven million, six hundred twenty-nine thousand, three hundred eighty-one".