1153913 has 4 divisors (see below), whose sum is σ = 1191168. Its totient is φ = 1116660.

The previous prime is 1153891. The next prime is 1153921. The reversal of 1153913 is 3193511.

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.

It is a cyclic number.

It is not a de Polignac number, because 1153913 - 2⁶ = 1153849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1153973) 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, 18581 + ... + 18642.

It is an arithmetic number, because the mean of its divisors is an integer number (297792).

2^1153913 is an apocalyptic number.

It is an amenable number.

1153913 is a deficient number, since it is larger than the sum of its proper divisors (37255).

1153913 is an equidigital number, since it uses as much as digits as its factorization.

1153913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37254.

The product of its digits is 405, while the sum is 23.

The square root of 1153913 is about 1074.2034257998. The cubic root of 1153913 is about 104.8876500477.

The spelling of 1153913 in words is "one million, one hundred fifty-three thousand, nine hundred thirteen".