1100137681 has 2 divisors, whose sum is σ = 1100137682. Its totient is φ = 1100137680.

The previous prime is 1100137663. The next prime is 1100137697. The reversal of 1100137681 is 1867310011.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1093294225 + 6843456 = 33065^2 + 2616^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100137681 - 2⁷ = 1100137553 is a prime.

It is a super-2 number, since 2×1100137681² = 2420605834312115522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1100137631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550068840 + 550068841.

It is an arithmetic number, because the mean of its divisors is an integer number (550068841).

Almost surely, 2^1100137681 is an apocalyptic number.

It is an amenable number.

1100137681 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100137681 is an equidigital number, since it uses as much as digits as its factorization.

1100137681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 1100137681 is about 33168.3234577812. The cubic root of 1100137681 is about 1032.3231819501.

Adding to 1100137681 its reverse (1867310011), we get a palindrome (2967447692).

The spelling of 1100137681 in words is "one billion, one hundred million, one hundred thirty-seven thousand, six hundred eighty-one".