1087919101 has 4 divisors (see below), whose sum is σ = 1088297532. Its totient is φ = 1087540672.

The previous prime is 1087919099. The next prime is 1087919111. The reversal of 1087919101 is 1019197801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1019197801 = 59 ⋅17274539.

It can be written as a sum of positive squares in 2 ways, for example, as 298252900 + 789666201 = 17270^2 + 28101^2 .

It is a cyclic number.

It is not a de Polignac number, because 1087919101 - 2¹ = 1087919099 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087919111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184870 + ... + 190663.

It is an arithmetic number, because the mean of its divisors is an integer number (272074383).

Almost surely, 2^1087919101 is an apocalyptic number.

It is an amenable number.

1087919101 is a deficient number, since it is larger than the sum of its proper divisors (378431).

1087919101 is an equidigital number, since it uses as much as digits as its factorization.

1087919101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378430.

The product of its (nonzero) digits is 4536, while the sum is 37.

The square root of 1087919101 is about 32983.6186765491. The cubic root of 1087919101 is about 1028.4871437063.

The spelling of 1087919101 in words is "one billion, eighty-seven million, nine hundred nineteen thousand, one hundred one".