1072117381 has 2 divisors, whose sum is σ = 1072117382. Its totient is φ = 1072117380.

The previous prime is 1072117369. The next prime is 1072117399. The reversal of 1072117381 is 1837112701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 704053156 + 368064225 = 26534^2 + 19185^2 .

It is a cyclic number.

It is not a de Polignac number, because 1072117381 - 2⁵ = 1072117349 is a prime.

It is a super-2 number, since 2×1072117381² = 2298871357284598322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1072117681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 536058690 + 536058691.

It is an arithmetic number, because the mean of its divisors is an integer number (536058691).

Almost surely, 2^1072117381 is an apocalyptic number.

It is an amenable number.

1072117381 is a deficient number, since it is larger than the sum of its proper divisors (1).

1072117381 is an equidigital number, since it uses as much as digits as its factorization.

1072117381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2352, while the sum is 31.

The square root of 1072117381 is about 32743.2035848663. The cubic root of 1072117381 is about 1023.4833428430.

The spelling of 1072117381 in words is "one billion, seventy-two million, one hundred seventeen thousand, three hundred eighty-one".