1072865905 has 8 divisors (see below), whose sum is σ = 1289592000. Its totient is φ = 856857456.

The previous prime is 1072865873. The next prime is 1072865921. The reversal of 1072865905 is 5095682701.

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 1072865905 - 2⁵ = 1072865873 is a prime.

It is a super-2 number, since 2×1072865905² = 2302082500222938050, which contains 22 as substring.

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, 176115 + ... + 182104.

It is an arithmetic number, because the mean of its divisors is an integer number (161199000).

Almost surely, 2^1072865905 is an apocalyptic number.

It is an amenable number.

1072865905 is a deficient number, since it is larger than the sum of its proper divisors (216726095).

1072865905 is an equidigital number, since it uses as much as digits as its factorization.

1072865905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358823.

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 1072865905 is about 32754.6318098677. The cubic root of 1072865905 is about 1023.7214770988.

The spelling of 1072865905 in words is "one billion, seventy-two million, eight hundred sixty-five thousand, nine hundred five".