1070863891 has 2 divisors, whose sum is σ = 1070863892. Its totient is φ = 1070863890.

The previous prime is 1070863837. The next prime is 1070863897. The reversal of 1070863891 is 1983680701.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1070863891 - 2¹¹ = 1070861843 is a prime.

It is a super-2 number, since 2×1070863891² = 2293498946095319762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1070863897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535431945 + 535431946.

It is an arithmetic number, because the mean of its divisors is an integer number (535431946).

Almost surely, 2^1070863891 is an apocalyptic number.

1070863891 is a deficient number, since it is larger than the sum of its proper divisors (1).

1070863891 is an equidigital number, since it uses as much as digits as its factorization.

1070863891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 1070863891 is about 32724.0567625715. The cubic root of 1070863891 is about 1023.0843111479.

The spelling of 1070863891 in words is "one billion, seventy million, eight hundred sixty-three thousand, eight hundred ninety-one".