1087973518 has 4 divisors (see below), whose sum is σ = 1631960280. Its totient is φ = 543986758.

The previous prime is 1087973501. The next prime is 1087973519. The reversal of 1087973518 is 8153797801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8153797801 = 193 ⋅42247657.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1087973519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 271993378 + ... + 271993381.

It is an arithmetic number, because the mean of its divisors is an integer number (407990070).

Almost surely, 2^1087973518 is an apocalyptic number.

1087973518 is a deficient number, since it is larger than the sum of its proper divisors (543986762).

1087973518 is an equidigital number, since it uses as much as digits as its factorization.

1087973518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543986761.

The product of its (nonzero) digits is 423360, while the sum is 49.

The square root of 1087973518 is about 32984.4435757222. The cubic root of 1087973518 is about 1028.5042915045.

The spelling of 1087973518 in words is "one billion, eighty-seven million, nine hundred seventy-three thousand, five hundred eighteen".