1087628393 has 4 divisors (see below), whose sum is σ = 1134916608. Its totient is φ = 1040340180.

The previous prime is 1087628309. The next prime is 1087628411. The reversal of 1087628393 is 3938267801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 3938267801 = 13 ⋅302943677.

It is a cyclic number.

It is not a de Polignac number, because 1087628393 - 2²⁰ = 1086579817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1087628293) 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, 23644073 + ... + 23644118.

It is an arithmetic number, because the mean of its divisors is an integer number (283729152).

Almost surely, 2^1087628393 is an apocalyptic number.

It is an amenable number.

1087628393 is a deficient number, since it is larger than the sum of its proper divisors (47288215).

1087628393 is an equidigital number, since it uses as much as digits as its factorization.

1087628393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47288214.

The product of its (nonzero) digits is 435456, while the sum is 47.

The square root of 1087628393 is about 32979.2115278701. The cubic root of 1087628393 is about 1028.3955265766.

The spelling of 1087628393 in words is "one billion, eighty-seven million, six hundred twenty-eight thousand, three hundred ninety-three".