1047955865 has 16 divisors (see below), whose sum is σ = 1387290240. Its totient is φ = 753582720.

The previous prime is 1047955841. The next prime is 1047955913. The reversal of 1047955865 is 5685597401.

It is not a de Polignac number, because 1047955865 - 2⁶ = 1047955801 is a prime.

It is a super-2 number, since 2×1047955865² = 2196422989975796450, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102149 + ... + 111938.

It is an arithmetic number, because the mean of its divisors is an integer number (86705640).

Almost surely, 2^1047955865 is an apocalyptic number.

It is an amenable number.

1047955865 is a deficient number, since it is larger than the sum of its proper divisors (339334375).

1047955865 is a wasteful number, since it uses less digits than its factorization.

1047955865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214192.

The product of its (nonzero) digits is 1512000, while the sum is 50.

The square root of 1047955865 is about 32372.1464379488. The cubic root of 1047955865 is about 1015.7363564717.

The spelling of 1047955865 in words is "one billion, forty-seven million, nine hundred fifty-five thousand, eight hundred sixty-five".