1070809381 has 2 divisors, whose sum is σ = 1070809382. Its totient is φ = 1070809380.

The previous prime is 1070809331. The next prime is 1070809499. The reversal of 1070809381 is 1839080701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 983386881 + 87422500 = 31359^2 + 9350^2 .

It is a cyclic number.

It is not a de Polignac number, because 1070809381 - 2¹³ = 1070801189 is a prime.

It is a super-2 number, since 2×1070809381² = 2293265460875206322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1070809381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1070809301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 535404690 + 535404691.

It is an arithmetic number, because the mean of its divisors is an integer number (535404691).

Almost surely, 2^1070809381 is an apocalyptic number.

It is an amenable number.

1070809381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1070809381 is an equidigital number, since it uses as much as digits as its factorization.

1070809381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 37.

The square root of 1070809381 is about 32723.2238784628. The cubic root of 1070809381 is about 1023.0669515586.

The spelling of 1070809381 in words is "one billion, seventy million, eight hundred nine thousand, three hundred eighty-one".