802581381 has 12 divisors (see below), whose sum is σ = 1324896352. Its totient is φ = 458617896.

The previous prime is 802581379. The next prime is 802581383. The reversal of 802581381 is 183185208.

It is an interprime number because it is at equal distance from previous prime (802581379) and next prime (802581383).

It is not a de Polignac number, because 802581381 - 2¹ = 802581379 is a prime.

It is a super-2 number, since 2×802581381² = 1288273746255734322, 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 (802581383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6369631 + ... + 6369756.

Almost surely, 2^802581381 is an apocalyptic number.

It is an amenable number.

802581381 is a deficient number, since it is larger than the sum of its proper divisors (522314971).

802581381 is a wasteful number, since it uses less digits than its factorization.

802581381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12739400 (or 12739397 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 36.

The square root of 802581381 is about 28329.8672958417. The cubic root of 802581381 is about 929.3151704763.

The spelling of 802581381 in words is "eight hundred two million, five hundred eighty-one thousand, three hundred eighty-one".