1537121532 has 12 divisors (see below), whose sum is σ = 3586616936. Its totient is φ = 512373840.

The previous prime is 1537121519. The next prime is 1537121591. The reversal of 1537121532 is 2351217351.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1537121532.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64046719 + ... + 64046742.

Almost surely, 2^1537121532 is an apocalyptic number.

1537121532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1537121532 is an abundant number, since it is smaller than the sum of its proper divisors (2049495404).

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

1537121532 is a wasteful number, since it uses less digits than its factorization.

1537121532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128093468 (or 128093466 counting only the distinct ones).

The product of its digits is 6300, while the sum is 30.

The square root of 1537121532 is about 39206.1415086973. The cubic root of 1537121532 is about 1154.0804089399.

Adding to 1537121532 its reverse (2351217351), we get a palindrome (3888338883).

The spelling of 1537121532 in words is "one billion, five hundred thirty-seven million, one hundred twenty-one thousand, five hundred thirty-two".