1036815381 has 12 divisors (see below), whose sum is σ = 1711568352. Its totient is φ = 592465896.

The previous prime is 1036815371. The next prime is 1036815391. The reversal of 1036815381 is 1835186301.

1036815381 is a `hidden beast` number, since 10 + 36 + 81 + 538 + 1 = 666.

1036815381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1036815371) and next prime (1036815391).

It is not a de Polignac number, because 1036815381 - 2⁵ = 1036815349 is a prime.

It is a super-2 number, since 2×1036815381² = 2149972268556350322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1036815301) 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, 8228631 + ... + 8228756.

It is an arithmetic number, because the mean of its divisors is an integer number (142630696).

Almost surely, 2^1036815381 is an apocalyptic number.

It is an amenable number.

1036815381 is a deficient number, since it is larger than the sum of its proper divisors (674752971).

1036815381 is a wasteful number, since it uses less digits than its factorization.

1036815381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16457400 (or 16457397 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The square root of 1036815381 is about 32199.6177151220. The cubic root of 1036815381 is about 1012.1242032902.

The spelling of 1036815381 in words is "one billion, thirty-six million, eight hundred fifteen thousand, three hundred eighty-one".