1056869147 has 4 divisors (see below), whose sum is σ = 1085433216. Its totient is φ = 1028305080.

The previous prime is 1056869111. The next prime is 1056869161. The reversal of 1056869147 is 7419686501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7419686501 = 211 ⋅35164391.

It is a cyclic number.

It is not a de Polignac number, because 1056869147 - 2²⁸ = 788433691 is a prime.

It is a super-2 number, since 2×1056869147² = 2233944787761015218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1056869197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14281979 + ... + 14282052.

It is an arithmetic number, because the mean of its divisors is an integer number (271358304).

Almost surely, 2^1056869147 is an apocalyptic number.

1056869147 is a deficient number, since it is larger than the sum of its proper divisors (28564069).

1056869147 is an equidigital number, since it uses as much as digits as its factorization.

1056869147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28564068.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 1056869147 is about 32509.5239429925. The cubic root of 1056869147 is about 1018.6079777830.

The spelling of 1056869147 in words is "one billion, fifty-six million, eight hundred sixty-nine thousand, one hundred forty-seven".