1090987913 has 2 divisors, whose sum is σ = 1090987914. Its totient is φ = 1090987912.

The previous prime is 1090987907. The next prime is 1090987921. The reversal of 1090987913 is 3197890901.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1090848784 + 139129 = 33028^2 + 373^2 .

It is a cyclic number.

It is not a de Polignac number, because 1090987913 - 2⁴ = 1090987897 is a prime.

It is not a weakly prime, because it can be changed into another prime (1090987973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545493956 + 545493957.

It is an arithmetic number, because the mean of its divisors is an integer number (545493957).

Almost surely, 2^1090987913 is an apocalyptic number.

It is an amenable number.

1090987913 is a deficient number, since it is larger than the sum of its proper divisors (1).

1090987913 is an equidigital number, since it uses as much as digits as its factorization.

1090987913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 47.

The square root of 1090987913 is about 33030.1061608951. The cubic root of 1090987913 is about 1029.4532911023.

The spelling of 1090987913 in words is "one billion, ninety million, nine hundred eighty-seven thousand, nine hundred thirteen".