1081371505 has 8 divisors (see below), whose sum is σ = 1298184552. Its totient is φ = 864738048.

The previous prime is 1081371469. The next prime is 1081371527. The reversal of 1081371505 is 5051731801.

It can be written as a sum of positive squares in 4 ways, for example, as 2446096 + 1078925409 = 1564^2 + 32847^2 .

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 1081371505 - 2¹³ = 1081363313 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31272 + ... + 56041.

It is an arithmetic number, because the mean of its divisors is an integer number (162273069).

Almost surely, 2^1081371505 is an apocalyptic number.

It is an amenable number.

1081371505 is a deficient number, since it is larger than the sum of its proper divisors (216813047).

1081371505 is an equidigital number, since it uses as much as digits as its factorization.

1081371505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89795.

The product of its (nonzero) digits is 4200, while the sum is 31.

The square root of 1081371505 is about 32884.2136138300. The cubic root of 1081371505 is about 1026.4196881006.

The spelling of 1081371505 in words is "one billion, eighty-one million, three hundred seventy-one thousand, five hundred five".