1515123132 has 24 divisors (see below), whose sum is σ = 3548437200. Its totient is φ = 503162496.

The previous prime is 1515123131. The next prime is 1515123133. The reversal of 1515123132 is 2313215151.

It is an interprime number because it is at equal distance from previous prime (1515123131) and next prime (1515123133).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1515123131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 231457 + ... + 237912.

It is an arithmetic number, because the mean of its divisors is an integer number (147851550).

Almost surely, 2^1515123132 is an apocalyptic number.

1515123132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1515123132 is an abundant number, since it is smaller than the sum of its proper divisors (2033314068).

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

1515123132 is a wasteful number, since it uses less digits than its factorization.

1515123132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469645 (or 469643 counting only the distinct ones).

The product of its digits is 900, while the sum is 24.

The square root of 1515123132 is about 38924.5826181862. The cubic root of 1515123132 is about 1148.5484223417.

Adding to 1515123132 its reverse (2313215151), we get a palindrome (3828338283).

It can be divided in two parts, 15151 and 23132, that added together give a palindrome (38283).

The spelling of 1515123132 in words is "one billion, five hundred fifteen million, one hundred twenty-three thousand, one hundred thirty-two".