1093157971 has 4 divisors (see below), whose sum is σ = 1093225032. Its totient is φ = 1093090912.

The previous prime is 1093157963. The next prime is 1093157977. The reversal of 1093157971 is 1797513901.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1797513901 = 61 ⋅29467441.

It is a cyclic number.

It is not a de Polignac number, because 1093157971 - 2³ = 1093157963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1093157977) 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, 8400 + ... + 47506.

It is an arithmetic number, because the mean of its divisors is an integer number (273306258).

Almost surely, 2^1093157971 is an apocalyptic number.

1093157971 is a deficient number, since it is larger than the sum of its proper divisors (67061).

1093157971 is an equidigital number, since it uses as much as digits as its factorization.

1093157971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67060.

The product of its (nonzero) digits is 59535, while the sum is 43.

The square root of 1093157971 is about 33062.9395396114. The cubic root of 1093157971 is about 1030.1353927025.

The spelling of 1093157971 in words is "one billion, ninety-three million, one hundred fifty-seven thousand, nine hundred seventy-one".