1087801973 has 2 divisors, whose sum is σ = 1087801974. Its totient is φ = 1087801972.

The previous prime is 1087801969. The next prime is 1087801987. The reversal of 1087801973 is 3791087801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 866595844 + 221206129 = 29438^2 + 14873^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087801973 - 2² = 1087801969 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1087801993) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 543900986 + 543900987.

It is an arithmetic number, because the mean of its divisors is an integer number (543900987).

Almost surely, 2^1087801973 is an apocalyptic number.

It is an amenable number.

1087801973 is a deficient number, since it is larger than the sum of its proper divisors (1).

1087801973 is an equidigital number, since it uses as much as digits as its factorization.

1087801973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 84672, while the sum is 44.

The square root of 1087801973 is about 32981.8430807012. The cubic root of 1087801973 is about 1028.4502325777.

The spelling of 1087801973 in words is "one billion, eighty-seven million, eight hundred one thousand, nine hundred seventy-three".