1081236515 has 12 divisors (see below), whose sum is σ = 1369368864. Its totient is φ = 819462096.

The previous prime is 1081236491. The next prime is 1081236521. The reversal of 1081236515 is 5156321801.

It is not a de Polignac number, because 1081236515 - 2²⁴ = 1064459299 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 297707 + ... + 301316.

It is an arithmetic number, because the mean of its divisors is an integer number (114114072).

Almost surely, 2^1081236515 is an apocalyptic number.

1081236515 is a deficient number, since it is larger than the sum of its proper divisors (288132349).

1081236515 is an equidigital number, since it uses as much as digits as its factorization.

1081236515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599066 (or 599047 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 1081236515 is about 32882.1610451625. The cubic root of 1081236515 is about 1026.3769762423.

The spelling of 1081236515 in words is "one billion, eighty-one million, two hundred thirty-six thousand, five hundred fifteen".