1166253403 has 4 divisors (see below), whose sum is σ = 1332861040. Its totient is φ = 999645768.

The previous prime is 1166253401. The next prime is 1166253443. The reversal of 1166253403 is 3043526611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3043526611 = 97 ⋅31376563.

It is a cyclic number.

It is not a de Polignac number, because 1166253403 - 2¹ = 1166253401 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1166253401) 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, 83303808 + ... + 83303821.

It is an arithmetic number, because the mean of its divisors is an integer number (333215260).

Almost surely, 2^1166253403 is an apocalyptic number.

1166253403 is a deficient number, since it is larger than the sum of its proper divisors (166607637).

1166253403 is an equidigital number, since it uses as much as digits as its factorization.

1166253403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166607636.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1166253403 is about 34150.4524567391. The cubic root of 1166253403 is about 1052.6022838855.

The spelling of 1166253403 in words is "one billion, one hundred sixty-six million, two hundred fifty-three thousand, four hundred three".