1153515412 has 24 divisors (see below), whose sum is σ = 2407337856. Its totient is φ = 472869408.

The previous prime is 1153515371. The next prime is 1153515439. The reversal of 1153515412 is 2145153511.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 894943 + ... + 896230.

It is an arithmetic number, because the mean of its divisors is an integer number (100305744).

Almost surely, 2^1153515412 is an apocalyptic number.

It is an amenable number.

1153515412 is an abundant number, since it is smaller than the sum of its proper divisors (1253822444).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1153515412 is a wasteful number, since it uses less digits than its factorization.

1153515412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1791207 (or 1791205 counting only the distinct ones).

The product of its digits is 3000, while the sum is 28.

The square root of 1153515412 is about 33963.4422872594. The cubic root of 1153515412 is about 1048.7560209678.

Adding to 1153515412 its reverse (2145153511), we get a palindrome (3298668923).

The spelling of 1153515412 in words is "one billion, one hundred fifty-three million, five hundred fifteen thousand, four hundred twelve".