1153413021 has 16 divisors (see below), whose sum is σ = 1546509888. Its totient is φ = 764640000.

The previous prime is 1153413011. The next prime is 1153413029. The reversal of 1153413021 is 1203143511.

It is not a de Polignac number, because 1153413021 - 2⁷ = 1153412893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153413029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 888645 + ... + 889941.

It is an arithmetic number, because the mean of its divisors is an integer number (96656868).

Almost surely, 2^1153413021 is an apocalyptic number.

It is an amenable number.

1153413021 is a deficient number, since it is larger than the sum of its proper divisors (393096867).

1153413021 is a wasteful number, since it uses less digits than its factorization.

1153413021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 1153413021 is about 33961.9348830422. The cubic root of 1153413021 is about 1048.7249893480.

Adding to 1153413021 its reverse (1203143511), we get a palindrome (2356556532).

The spelling of 1153413021 in words is "one billion, one hundred fifty-three million, four hundred thirteen thousand, twenty-one".